8 Dangerous Things for Christians to Avoid

1. False Doctrine Such as Another Gospel

False doctrine is not merely an innocent difference of opinion. When teaching changes the identity of Christ, corrupts the gospel, adds works to salvation, or contradicts God’s revealed Word, it endangers souls and damages the church. Believers must therefore test every teaching by Scripture, hold firmly to the true gospel, and lovingly resist errors that spread through the body of Christ.

2. Ungodly Motivations

False teachers are often recognized not only by what they teach, but also by the desires driving their ministry. Scripture warns about deception, pride, selfish ambition, rebellion, and the pursuit of personal influence. Believers must judge carefully, however, because only God knows the heart perfectly. Teaching and leadership should be evaluated by sound doctrine, godly character, observable conduct, and submission to the authority of Scripture.

• Matthew 7:15 “Beware of false prophets, which come to you in sheep’s clothing, but inwardly they are ravening wolves” – False teachers may appear gentle, spiritual, and trustworthy while secretly seeking to exploit or destroy the flock. Jesus therefore commands believers to examine their fruit rather than trusting outward appearances.
• 2 Corinthians 11:13 “Such are false apostles, deceitful workers, transforming themselves into the apostles of Christ” – False teachers may claim spiritual authority and imitate genuine servants of Christ. Their deceptive appearance makes biblical discernment essential, because a religious title or impressive ministry does not prove that someone was sent by God.
• 2 Corinthians 11:15 “His ministers also be transformed as the ministers of righteousness” – Because Satan disguises himself as an angel of light, his servants may also appear moral, compassionate, and righteous. Outward respectability must therefore be tested by what a person teaches about Christ, the gospel, and the written Word of God.
• 1 Corinthians 14:34 “Let your women keep silence in the churches: for it is not permitted unto them to speak; but they are commanded to be under obedience” – In the context of orderly congregational worship, Paul requires women to respect God’s established order and not assume the authoritative role being discussed. This is not an absolute prohibition against every kind of speech, since Paul had already acknowledged women praying and prophesying in 1 Corinthians 11:5.
• 1 Timothy 2:12 “I suffer not a woman to teach, nor to usurp authority over the man, but to be in silence” – Paul does not permit a woman to exercise the authoritative teaching and governing role assigned to qualified male elders in the local church. This restriction concerns church office and authority, not a woman’s intelligence, spiritual worth, giftedness, or ability to minister in other biblical ways.
• 2 Timothy 3:8 “Men of corrupt minds, reprobate concerning the faith” – Paul compares false teachers to Jannes and Jambres, who resisted Moses. Such men oppose revealed truth because their thinking has become corrupted, and their profession of faith fails the test of sound doctrine and godly fruit.
• Titus 1:16 “They profess that they know God; but in works they deny him” – A verbal claim to know God is not credible when a person’s settled conduct continually contradicts that profession. Persistent rebellion and hypocrisy can reveal that someone’s confession is empty.
• Titus 1:16 “Being abominable, and disobedient, and unto every good work reprobate” – False profession produces corrupt fruit. Those who habitually reject God’s truth become morally defiled, resistant to obedience, and unqualified for the good work they claim to perform.
• 2 Peter 2:1 “There shall be false teachers among you, who privily shall bring in damnable heresies” – False teachers can arise from within the visible Christian community and introduce destructive error secretly. Churches must therefore test teachers continually rather than assuming that familiarity, popularity, or membership guarantees faithfulness.
• 3 John 9 “Diotrephes, who loveth to have the preeminence among them, receiveth us not” – Diotrephes was motivated by the desire to be first. His pride caused him to reject apostolic authority, speak maliciously, refuse faithful believers, and remove those who opposed him. A craving for control is a serious warning sign in church leadership.
• Jude 12 “These are spots in your feasts of charity, when they feast with you, feeding themselves without fear” – False teachers participated in the church’s fellowship while selfishly serving themselves. Rather than caring for God’s people, they used the congregation for personal satisfaction and influence without fearing divine judgment.

3. Untrustworthy Attitudes

Untrustworthy teachers and leaders reveal themselves through disloyalty, divisiveness, pride, rebellion, and disregard for biblical responsibility. Scripture does not command believers to become suspicious of everyone, but it does require discernment. A person’s doctrine, conduct, relationships, family leadership, and response to correction should be examined carefully, especially when that person seeks influence within the church.

• Proverbs 25:19 “Confidence in an unfaithful man in time of trouble is like a broken tooth, and a foot out of joint” – Depending upon an unreliable person during a crisis brings pain and disappointment. Trust should be placed in those whose proven character demonstrates faithfulness, honesty, and dependability.
• Acts 20:29 “After my departing shall grievous wolves enter in among you, not sparing the flock” – Paul warned that dangerous teachers would enter the church and injure God’s people. Their lack of concern for the flock exposes that they do not possess the heart of faithful shepherds.
• Acts 20:30 “Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them” – False teaching can arise from within the congregation itself. Such teachers distort truth to gather personal followers rather than directing believers toward faithful devotion to Jesus Christ.
• Romans 16:17 “Mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them” – Believers must identify and distance themselves from those who create divisions by teaching contrary to apostolic doctrine. Biblical separation is sometimes necessary to protect the church from persistent, destructive error.
• 2 Thessalonians 3:14 “If any man obey not our word by this epistle, note that man, and have no company with him” – A professing believer who persistently refuses apostolic instruction should face loving but serious church discipline. The purpose is not personal revenge, but correction, shame over sin, and eventual restoration.
• Titus 3:10 “A man that is an heretick after the first and second admonition reject” – The word translated “heretick” describes a divisive or factious person who stubbornly promotes division. After repeated biblical warnings are rejected, the church should no longer permit that person to disrupt its fellowship.
• Jude 18 “There should be mockers in the last time, who should walk after their own ungodly lusts” – Scoffers ridicule divine truth because they prefer their sinful desires to submission under God. Their rejection of biblical authority reflects moral rebellion, not merely an intellectual disagreement.
• 1 Timothy 3:5 “If a man know not how to rule his own house, how shall he take care of the church of God?” – A man’s leadership within his household provides an observable test of his readiness to oversee a congregation. Failure to manage his family faithfully raises serious concerns about his qualification for church leadership.
• 1 Timothy 6:3-4 “If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ… he is proud, knowing nothing” – A teacher who rejects Christ’s sound doctrine demonstrates spiritual pride and deficient understanding. Intellectual confidence and argumentative skill cannot substitute for humble submission to God’s Word.
• 2 John 10 “If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed” – Believers must not provide hospitality, endorsement, or material support that helps a false teacher spread doctrine denying the truth about Jesus Christ. This passage does not forbid ordinary kindness to unbelievers, but it prohibits participating in or advancing a false religious mission.
• Mankind has divided and conquered! God is not impressed.

4. Supporting Schisms or Divisions

Biblical unity is not agreement at the expense of truth, but fellowship built upon the gospel, sound doctrine, humility, and love. Schisms arise when people promote themselves, gather personal followers, spread slander, or elevate private insight above Scripture. Christians must reject both false unity that tolerates error and divisiveness that fractures Christ’s church through pride, jealousy, or selfish ambition.

• 1 Corinthians 1:10 “That ye all speak the same thing, and that there be no divisions among you” – Paul appeals to believers to be united in biblical conviction, judgment, and purpose. Christian unity does not require identical opinions on every minor matter, but it does require submission to Christ, fidelity to the gospel, and a refusal to form competing factions around human personalities.
• Acts 20:30 “Speaking perverse things, to draw away disciples after them” – Some teachers distort Scripture because they desire personal followers. Faithful ministers direct disciples toward Christ, while divisive leaders build loyalty to themselves, their private interpretations, or their movements.
• Romans 16:17 “Mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them” – The divisions condemned here are caused by teaching that contradicts apostolic doctrine. Believers must recognize persistent promoters of such error and separate from their influence in order to protect the church.
• 1 Corinthians 10:14 “Wherefore, my dearly beloved, flee from idolatry” – Christians must decisively reject every form of idolatry. This principle also warns against giving teachers, ministries, traditions, political causes, or personal revelations the devotion and authority that belong to God alone.
• 1 Corinthians 3:3 “For whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?” – Jealousy, conflict, and factionalism reveal spiritual immaturity. When Christians compete for recognition or divide around favored leaders, they behave according to fallen human desires rather than the Spirit of God.
• James 3:16 “Where envying and strife is, there is confusion and every evil work” – Jealousy and selfish ambition produce instability, disorder, and sinful conduct. Leadership motivated by rivalry cannot produce the peaceful fruit of wisdom that comes from God.
• James 4:11 “Speak not evil one of another, brethren” – Christians must not slander, maliciously criticize, or tear down fellow believers. Biblical correction addresses sin truthfully and seeks restoration, while slander damages reputations and deepens unnecessary division.
• Jude 19 “These be they who separate themselves, sensual, having not the Spirit” – False teachers create factions by following their natural desires rather than the Holy Spirit. Their divisiveness, corrupt conduct, and rejection of apostolic truth reveal that their spiritual claims are false.
• Gnosticism and the altar of special knowledge in the church today – Ancient Gnosticism claimed that spiritual salvation or maturity came through secret knowledge available only to an enlightened few. A similar attitude appears in churches today whenever someone claims private revelation, hidden interpretations, or superior spiritual insight that ordinary believers cannot test from Scripture. God has given His completed Word to the whole church, and every teaching must be examined by it. No teacher, experience, tradition, or supposed revelation may stand above the Bible or divide believers into spiritual elites and uninformed inferiors (Acts 17:11; 2 Timothy 3:16-17; Jude 3).

5. Walking in Darkness

Walking in darkness describes a settled pattern of sin, deception, and disobedience that contradicts fellowship with God. Christians still stumble, but they are called to repent, walk in the light, and separate from conduct that dishonors Christ. These verses are important because they distinguish genuine spiritual fellowship from an empty profession that tolerates unrepentant sin.

• Romans 13:12 “The night is far spent, the day is at hand: let us therefore cast off the works of darkness” – Because Christ’s return is drawing nearer, believers must abandon sinful conduct and live openly, watchfully, and obediently as people who belong to the coming day.
• 2 Corinthians 6:14 “What communion hath light with darkness?” – Righteousness and rebellion against God cannot share genuine spiritual fellowship. Christians must not enter binding spiritual partnerships that require compromise with unbelief, idolatry, or conduct opposed to Christ.
• Ephesians 5:11 “Have no fellowship with the unfruitful works of darkness, but rather reprove them” – Believers must neither participate in sinful practices nor silently approve them. They are called to expose darkness by speaking truth and living in a way that reveals what pleases the Lord.
• 2 Timothy 2:21 “If a man therefore purge himself from these, he shall be a vessel unto honour” – A servant of God must separate from corrupt teaching, ungodly conduct, and dishonorable influences. Cleansing oneself from such things prepares a believer to be useful to the Master and ready for every good work.
• 1 John 1:6 “If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth” – A continual lifestyle of unrepentant sin contradicts a claim of fellowship with God. Genuine fellowship produces confession, repentance, and an increasing desire to walk in the truth.

6. Participating in Sin and Worldliness

Christians are saved by grace, not by moral performance, yet that same grace teaches believers to reject ungodliness and pursue holiness. Participation in persistent sin damages fellowship with God, harms the church’s testimony, and may influence others toward disobedience. Scripture therefore commands believers to flee temptation, reject corrupt conduct, practice appropriate church discipline, and resist friendship with the fallen world system.

• Galatians 5:19-21 “Now the works of the flesh are manifest” – Sexual immorality, idolatry, hatred, jealousy, drunkenness, and similar sins reveal what fallen human nature produces when it is not submitted to the Holy Spirit. Paul warns that those whose lives are continually characterized by such unrepentant practices will not inherit the kingdom of God.
• 1 Corinthians 5:9-10 “I wrote unto you in an epistle not to company with fornicators” – Paul did not command Christians to avoid every immoral unbeliever, since that would require leaving the world entirely. His concern was that believers not treat serious, unrepentant sin within the professing church as harmless or acceptable.
• 1 Corinthians 5:11 “If any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat” – A person who claims to be a Christian while stubbornly continuing in serious, public sin should not receive normal Christian fellowship as though nothing were wrong. This separation is an act of church discipline intended to preserve the congregation’s purity and bring the offender to repentance.
• Ephesians 5:11 “Have no fellowship with the unfruitful works of darkness, but rather reprove them” – Christians must not participate in, approve of, or assist sinful practices. They should expose darkness through truthful speech, godly conduct, and faithful application of Scripture.
• 2 Timothy 2:16 “Shun profane and vain babblings: for they will increase unto more ungodliness” – Empty, irreverent arguments do not strengthen faith or produce holiness. They spread confusion, encourage further ungodliness, and distract believers from sound doctrine and obedient Christian living.
• 2 Timothy 2:22 “Flee also youthful lusts: but follow righteousness, faith, charity, peace” – Believers should not merely attempt to manage sinful desires while remaining near temptation. They must flee those desires and actively pursue righteousness, faithfulness, love, and peace alongside others who sincerely call upon the Lord.
• 1 Timothy 6:11 “But thou, O man of God, flee these things; and follow after righteousness, godliness, faith, love, patience, meekness” – In context, Timothy was commanded to flee greed, the love of money, corrupt disputes, and the desire for material gain. Faithful servants of God must replace such worldly ambitions with godly character and contentment.
• James 4:4 “Whosoever therefore will be a friend of the world is the enemy of God” – The “world” here is the rebellious system of desires, values, and ambitions opposed to God. Deliberately embracing that system is spiritual unfaithfulness because loyalty to God cannot be joined with devotion to what resists His authority.

7. Judging One Another in Malice and Wickedness

Scripture does not forbid all moral discernment or biblical correction as is commonly misquoted as “Judge Not!”. It condemns hypocritical, self-righteous, malicious, and merciless judgment. Christians must examine themselves first, judge according to God’s truth rather than personal hostility, and seek restoration instead of condemnation. This distinction is important because righteous discernment protects the church, while cruel judgment, jealousy, and selfish ambition produce division and wickedness.

• Luke 6:37 “Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven” – Jesus warns against a harsh, condemning spirit that delights in finding fault and withholding mercy. Believers should treat others with the forgiveness and grace they have received from God.
• Matthew 7:3-5 “First cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother’s eye” – Jesus does not prohibit helping another believer confront sin. He commands us first to examine and correct our own faults so that any correction we offer is humble, honest, and free from hypocrisy.
• 1 Corinthians 5:8 “Let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth” – Because Christ is our Passover sacrifice, believers should remove the corrupting influence of malice and wickedness from their lives. Christian fellowship should instead be characterized by sincerity, purity, and truth.
• James 2:13 “He shall have judgment without mercy, that hath shewed no mercy; and mercy rejoiceth against judgment” – A person who continually refuses mercy reveals a serious contradiction between his conduct and his claim to know the merciful God. Genuine faith produces compassion because believers understand how much mercy they themselves have received.
• James 3:14-16 “If ye have bitter envying and strife in your hearts, glory not, and lie not against the truth… For where envying and strife is, there is confusion and every evil work” – Bitter jealousy and selfish ambition do not come from God’s wisdom. They are earthly, unspiritual, and demonic in character, producing disorder, conflict, and many forms of evil within the church.

8. Defiling Your Conscience

The conscience is an inner witness that evaluates conduct according to what a person believes is right or wrong. It must be trained by Scripture rather than personal preference, religious tradition, or cultural pressure. Christians should avoid actions that violate conscience, encourage another believer to sin, support false teaching, or knowingly neglect obedience. A clear conscience does not save us, but it helps us walk honestly before God and others.

• 1 Corinthians 10:28 “If any man say unto you, This is offered in sacrifice unto idols, eat not for his sake that shewed it, and for conscience sake” – Although the food itself was not spiritually contaminated, a believer should abstain when eating it would appear to endorse idolatry or encourage another person to violate conscience. Christian liberty must be governed by love for others.
• 2 Corinthians 6:17 “Come out from among them, and be ye separate… and touch not the unclean thing; and I will receive you” – God calls His people to separate from idolatrous worship and spiritually compromising alliances. This does not require avoiding all unbelievers, but it forbids participation in practices that unite the worship of Christ with false religion or moral uncleanness.
• 1 Timothy 5:22 “Lay hands suddenly on no man, neither be partaker of other men’s sins: keep thyself pure” – Church leaders must not appoint, recognize, or restore someone to ministry hastily. Endorsing an unqualified person can make those responsible participants in the damage caused by that person’s sinful conduct or false teaching.
• 2 John 11 “He that biddeth him God speed is partaker of his evil deeds” – Providing encouragement, hospitality, financial support, or public endorsement to a false teacher can help advance his destructive mission. Christians must not participate in spreading teachings that deny the biblical truth about Jesus Christ.
• Galatians 4:8-11 “Ye observe days, and months, and times, and years. I am afraid of you, lest I have bestowed upon you labour in vain” – Paul feared that the Galatians were returning to religious bondage by treating ceremonial observances as necessary for acceptance with God. Observing a day is not inherently sinful, but trusting religious calendars, rituals, or law-keeping for justification abandons the sufficiency of Christ.
• James 4:17 “To him that knoweth to do good, and doeth it not, to him it is sin” – Sin includes not only committing what God forbids, but also knowingly neglecting what He commands. When Scripture and conscience make a duty clear, deliberately refusing to obey is sinful.
• 8 Truths About the Conscience
• God’s Law Written on the Heart: The New Covenant, the Ten Commandments, and Christian Obedience

Conclusion

Scripture repeatedly warns the church that spiritual danger does not always arrive openly. False doctrine may appear persuasive, ungodly ambition may hide beneath religious language, and divisive people may present themselves as defenders of truth. For this reason, believers must test every message, ministry, and leader by the written Word of God. The true gospel of Jesus Christ must never be altered, supplemented, or replaced, because salvation is by grace through faith in His finished work, not through human merit, religious ritual, secret knowledge, or personal revelation.

Biblical discernment, however, must never become an excuse for pride, suspicion, slander, or malicious judgment. Jesus commands His followers to examine themselves before correcting others, to show mercy, and to speak truth with humility. Christians must distinguish between faithfully confronting destructive error and attacking people because of jealousy, resentment, selfish ambition, or personal disagreement. The wisdom that comes from God is pure, peaceable, gentle, open to reason, full of mercy, and without hypocrisy (James 3:17).

The church must also protect itself from those who promote division, gather followers around themselves, resist correction, or use spiritual authority for personal control. Faithful leaders point people toward Christ, care for the flock, submit to Scripture, demonstrate godly character, and handle their responsibilities with integrity. No title, gifting, popularity, emotional experience, or claim of special knowledge can replace the biblical qualifications of sound doctrine and observable faithfulness.

Believers are also called to separate from darkness without withdrawing from the people who need the gospel. Scripture commands Christians to reject idolatry, sexual immorality, greed, drunkenness, slander, corrupt speech, false religion, and friendship with the rebellious values of the world. This separation is not an attempt to earn salvation. It is the proper response of those who have already been saved by grace and are now called to walk as children of light (Ephesians 5:8).

A clear conscience must be guarded carefully. Christians should not participate in conduct they believe to be sinful, pressure another believer to violate conscience, endorse false teachers, appoint leaders hastily, or knowingly neglect what God commands. Yet conscience itself is not the final authority. It must be trained, corrected, and governed by Scripture so that believers do not confuse personal preference, tradition, or fear with the revealed will of God.

Taken together, these passages call every Christian to remain watchful, humble, holy, and firmly grounded in biblical truth. We must reject another gospel, expose destructive doctrine, resist worldly compromise, avoid needless division, practice righteous discernment, and pursue sincerity and truth. Above all, we must keep our eyes fixed upon Jesus Christ, the Head of the church, remembering that genuine spiritual maturity is revealed not only by what we oppose, but also by what we pursue: righteousness, faith, love, peace, mercy, purity, and obedience to the Word of God.

For deeper study:

• Stop doing these things (they will destroy the joy of your salvation) – Stop doing these things. They will not help you grow in grace and knowledge. They will destroy the joy of your salvation.
• 7 ways to restore the joy of your salvation – Rediscover joy in your Christian journey! Embrace hope, seek medical help, confess sins, focus on Jesus, trust God, and serve others.
• 8 Important Things for Christians to Embrace – Christians need to embrace these things to love one another in a way that is pleasing to the Lord Jesus Christ.
• How can I overcome sin in my Christian life? | GotQuestions.org – Make it a habit not to leave the Word until you have written down something you have gained from it. Some record prayers to God, asking Him to …