Overview

More often than not, this kind of question surfaces in the aftermath of betrayal, or in the uneasy moments when temptation feels too close. Whether you’ve been hurt by unfaithfulness or are wrestling with your own actions, the deeper question is often this: What does God say about all of this, and is there a way back? After hearing the raw, unfiltered stories of people trying to hold broken marriages together, I’ve come to understand that adultery is rarely just about desire.

It’s about disordered love , when the sacred becomes disposable, and trust is treated as optional. Scripture treats adultery not as a private misstep but as a serious rupture of covenant and character. God’s Word doesn’t leave room for confusion; it speaks with clarity about what’s right, what’s broken, and what redemption can look like.

Without this truth, it's easy to get stuck cycling through secrecy, bitterness, or self-condemnation. But Scripture offers more than judgment; it offers a way forward. “You shall know the truth, and the truth shall make you free” (John 8:32). This article takes a theologically grounded, NKJV Bible-based approach to understanding adultery: what God commands, what happens when we disobey, and how repentance, accountability, and grace can begin to rebuild what was lost.

What Is Adultery in the Bible? Biblical Definition of Adultery Adultery in the Bible refers to a voluntary sexual relationship between a married person and someone other than their spouse. It’s not just physical betrayal, it’s the corruption of a sacred union God designed to be exclusive and lasting.

Going Deeper

The root of the word “adultery” is closely linked to adulterate, meaning to make something impure by adding a foreign element. That’s what adultery does: it defiles the purity of marriage by introducing a third party into a covenant meant for two. From the beginning, Scripture defines marriage as the union of one man and one woman, joined together by God (Genesis 2:24).

The command is simple and absolute: “You shall not commit adultery” (Exodus 20:14, NKJV). No exception is given, and no clarification is needed, because the people of Israel already understood what adultery meant. It was, and remains, a sin that tears at the heart of God’s design for faithfulness.

What makes adultery especially damaging is that it not only involves sexual immorality but also violates a covenant of trust. Other sins of the body, like fornication, involve impurity, but adultery adds betrayal and covenant-breaking to that impurity. It damages marriages, dishonors God, and wounds everyone involved (Proverbs 6:32; 1 Corinthians 6:18).

What Does the Bible Say About Adultery and Infidelity? Throughout Scripture, infidelity is never minimized. Whether through physical acts or lustful thoughts, the Bible treats unfaithfulness as a personal and moral collapse.

Key Takeaways

Jesus makes this clear when He says, “Whoever looks at a woman to lust for her has already committed adultery with her in his heart” (Matthew 5:28, NKJV). Scripture on adultery consistently calls us back to purity, not just in action but in thought, desire, and commitment. Faithfulness in marriage is meant to reflect God’s faithfulness to His people, and when that is betrayed, the consequences reach far beyond the surface.

The Commandment: “You Shall Not Commit Adultery” Where in the Bible Does It Talk About Adultery? The Bible speaks with unwavering clarity on adultery, beginning with the Ten Commandments. Exodus 20:14 declares, “You shall not commit adultery” (NKJV).

This command is restated in Deuteronomy 5:18, reaffirming its place as a central moral law given by God to His people. Though simple in form, the commandment carries deep spiritual significance. It is not merely a social guideline; it reflects God’s design for marriage as a lifelong, exclusive covenant between one man and one woman (Genesis 2:24; Matthew 19:5–6).

In the Old Testament, adultery was treated as a grievous offense, punishable by severe consequences (Leviticus 20:10). This was not because of legalism, but because adultery in the Bible represented a betrayal of both personal and communal trust. It was understood to destroy families, destabilize society, and most importantly, offend the holiness of God.

Practical Application

The New Testament reinforces this command with even greater spiritual weight. Rather than only judging the act, Jesus extends the meaning of adultery to the intentions of the heart. His teachings reveal that adultery, according to the Bible, is not limited to physical acts; it begins with desire.

What Does the Bible Say About Adulterous Men and Women? The Bible does not speak only to one gender. Both men and women are held to the same standard of fidelity and purity.

The warnings in scriptures on adultery apply universally, confronting all who treat God’s covenant lightly or justify impure thoughts. Lust, secrecy, and emotional unfaithfulness are not harmless, they are symptoms of a heart turned inward instead of upward. Adultery in the Old and New Testaments is consistently portrayed as a spiritual and moral failure.

Whether through action or intention, God calls both men and women to honor marriage and reflect His faithfulness through theirs. Get Closer to God Today Download Bible Chat ★ 4.9 Average Rating | Over 5 Million Downloads

What Does the Bible Say About Adultery? Commandments and Consequences

Overview

Going Deeper

Key Takeaways

Practical Application

Continue Learning in the App

More in Moral & Ethics

Navigating Faithfulness, Beauty, and Relationships: A Biblical Guide

Understanding and Overcoming Lust: A Biblical Perspective

Overcoming Lust and Finding Purpose

Is Lying a Sin? What Every Christian Should Know About Honesty