The Bible condemns infidelity throughout both Old and New Testaments, appearing in 52 references across Scripture’s 31,102 verses. The Ten Commandments forbid adultery in Exodus 20:14, while Jesus extends the prohibition to lustful intent in Matthew 5:27-28. Adultery breaks the one-flesh union of marriage, described as a covenant made before God, and causes emotional, physical, and spiritual harm. Despite severe consequences, including death penalties in Leviticus 20:10, Scripture offers forgiveness through genuine repentance, as demonstrated when Jesus told the adulteress to “go and sin no more” in John 8:11. The sections ahead explore why God treats this sin so seriously and whether broken marriages can be restored.
Key Takeaways
- The Bible explicitly forbids adultery in the Ten Commandments and consistently condemns it throughout both Old and New Testaments.
- Jesus taught that even lustful intent constitutes adultery in the heart, expanding the definition beyond physical acts.
- Adultery breaks the sacred marriage covenant, causing spiritual, emotional, and relational harm to all involved parties.
- Scripture permits divorce for sexual immorality, allowing the innocent spouse to remarry without committing adultery themselves.
- The Bible offers forgiveness and restoration through genuine repentance, confession, and faith in Christ’s redemptive work.
What the Bible Says About Adultery and Infidelity
The Bible addresses adultery with unmistakable clarity, naming it as a violation of God’s design for marriage in both the Old and New covenants.
Adultery violates God’s sacred design for marriage, condemned with unwavering clarity throughout both Old and New Testament Scripture.
The Ten Commandments forbid it outright in Exodus 20:14, and Proverbs 6:32 warns that the adulterer “destroys himself.”
Jesus deepened this understanding in Matthew 5:27-28, teaching that even lustful intent constitutes adultery in the heart.
The New Testament further clarifies that divorcing and remarrying without biblical grounds also falls under this category, as stated in Matthew 19:9.
Adultery appears 52 times across Scripture, ranking among the most frequently condemned behaviors.
Hebrews 13:4 solemnly declares that God will judge the sexually immoral and adulterous, underscoring marriage as sacred and requiring faithfulness that reflects God’s own unchanging character.
Across the 66 books of the Bible there are approximately 31,102 verses, and verse counts vary slightly by translation.
Why God Condemns Adultery So Severely
Why does Scripture treat adultery with such gravity, placing it alongside murder and idolatry in the most serious tier of human wrongdoing? The answer lies in its all-encompassing destruction.
Proverbs 6:32 explains that adultery corrupts the soul itself, destroying inner purity and personal integrity. The act tears apart the one-flesh union established in Eden, damaging people emotionally, physically, mentally, and spiritually.
Beyond harming a spouse, adultery represents spiritual unfaithfulness against God, forsaking both marriage promises and divine design. Leviticus 20:10 mandated death for adulterers, while Hebrews 13:4 warns that God judges the sexually immoral.
Genesis 6-7 records how widespread sexual immorality prompted the flood, sparing only eight people. These severe consequences reflect adultery’s power to separate individuals from Christ’s light, leading them into spiritual darkness and away from God’s original intent for human relationships. Many Catholics consult the NABRE for the scriptural texts cited and official liturgical readings.
What Adultery Does to the Marriage Covenant
Understanding the severe consequences of adultery naturally raises questions about what exactly happens to the marital bond when infidelity occurs. Scripture presents marriage as a covenant made in God’s sight, and adultery breaches that sacred commitment.
However, biblical scholars distinguish between breaching and breaking a covenant. Adultery violates the covenant’s terms without automatically dissolving it, similar to how God maintained His covenant with Israel despite their spiritual unfaithfulness. Official dissolution requires formal action, such as a certificate of divorce.
Jesus permits divorce specifically for sexual immorality in Matthew 5:32 and 19:9, allowing the innocent spouse to remarry. Paul adds abandonment by an unbelieving partner as another exception in 1 Corinthians 7:15. These provisions establish grounds for ending marriage rather than automatic termination. The biblical picture of marriage as a covenant reflects the broader Christian belief in the unity of persons within one divine essence, as expressed in the doctrine of the Trinity one divine essence.
Can Adultery Be Forgiven in the Bible?
Forgiveness stands at the heart of Scripture’s response to adultery, offering a path forward even after the deepest betrayal of marital trust.
Jesus demonstrated this when confronting the woman caught in adultery, telling her, “I do not condemn you either. Go now and leave your life of sin” (John 8:11).
King David received forgiveness after his affair with Bathsheba, documented in Psalm 51.
First John 1:9 promises that confessing sins brings forgiveness, while Romans 8:1 declares no condemnation for those in Christ.
The Bible specifies conditions: genuine repentance, confession, and faith in Christ’s sacrifice.
Adultery is not classified as an unforgivable sin—only blasphemy against the Holy Spirit holds that distinction (Mark 3:28-29).
Restoration requires ongoing accountability and changed behavior.
Consistent spiritual disciplines like daily Bible reading and prayer also support lasting restoration by fostering repentance and transformed behavior, and this is emphasized by the importance of daily Bible reading in spiritual growth.
