The seventh commandment, "You shall not commit adultery," is a moral prohibition against sexual relations between a married person and someone who is not their spouse. It appears in Exodus 20:14 and Deuteronomy 5:18 within the Hebrew Bible's Ten Commandments, forming part of a foundational ethical structure for Jewish and Christian traditions.
This commandment establishes boundaries around intimate relationships, emphasizing loyalty and trust in marriage. Its presence among the Ten Commandments signals that fidelity is not merely a personal choice but a communal and divine standard. The prohibition extends beyond physical acts to include intentions and desires that undermine marital integrity.
Adultery was historically viewed as a breach of covenantal obligations. In ancient Israelite society, marriage was both a legal and religious bond, and infidelity disrupted social harmony and family lineage. The commandment reflects a broader concern for relational stability, particularly in patriarchal structures where inheritance and tribal identity were tied to bloodlines.
The seventh commandment functions as a normative directive rather than a legalistic rule requiring enforcement. It operates through internalized values-shame, guilt, honor, and conscience-rather than solely through state punishment. In practice, it discourages actions that threaten marital trust, such as emotional affairs, flirtation with intent, or coercive sexual behavior.
Jesus expanded the scope of the commandment in the Sermon on the Mount. In Matthew 5:27-28, he stated that lustful thoughts constitute spiritual adultery, indicating that the commandment applies to inner attitudes as well as external conduct. This interpretation shifts focus from mere behavior to the condition of the heart.
Modern applications vary. Some Christian denominations interpret the commandment strictly, opposing divorce and remarriage under certain conditions. Others emphasize restoration and forgiveness, recognizing human fallibility. In secular ethics, the principle aligns with consent-based relationships and mutual respect in partnerships.
The commandment rests on three core elements: exclusivity, commitment, and fidelity. Exclusivity means that sexual intimacy belongs within a specific relationship. Commitment implies ongoing responsibility, not just a one-time promise. Fidelity requires consistency in action and intention over time.
Interpretations differ across traditions:
A lesser-known distinction: the Hebrew word *na'aph* (from which "adultery" derives) specifically denotes sexual relations between a married woman and a man other than her husband. This highlights gendered assumptions in ancient law-while men could have multiple partners under certain circumstances, women's sexual autonomy was tightly restricted.
The seventh commandment remains relevant in religious education, counseling, and legal systems. Many faith-based organizations use it in premarital workshops to reinforce commitment. Courts in countries with religious law may consider it during divorce proceedings involving alleged infidelity.
In the United States, adultery is not a criminal offense in most states, but it can influence alimony and custody decisions. For example, in New York, adultery may be cited as grounds for divorce, though it rarely affects outcomes due to no-fault divorce laws.
Non-religious institutions also apply its principles. Companies use codes of conduct that prohibit workplace relationships violating company policy, especially when power dynamics exist. These policies reflect the commandment's underlying concern: protecting trust and preventing exploitation.
Many assume the seventh commandment only forbids sex outside marriage. But it also condemns deception, manipulation, and emotional betrayal that erode trust. A partner who maintains a secret relationship-even without physical contact-violates the spirit of the commandment.
Another misconception: that the commandment applies only to heterosexual unions. While the biblical context assumes heterosexual marriage, modern theologians argue that the principle of exclusive fidelity applies regardless of gender. The commandment is not about gender roles but about mutual commitment.
A critical correction: the commandment does not equate all extramarital sex with adultery. The term "adultery" specifically refers to sexual relations with a married person. Sleeping with an unmarried person is not technically adultery, though many religious traditions still view it as sinful or morally problematic.
For example, in a 2021 survey by Pew Research Center, 61% of U.S. adults believed that cheating on a partner-regardless of marital status-was morally wrong. This shows that public understanding often extends beyond the literal definition to include broader breaches of trust.
Consider a married man in his late 30s who begins a romantic relationship with a colleague. He avoids physical intimacy but sends frequent private messages, shares personal details, and plans weekend trips. His wife discovers the texts and confronts him.
From a biblical perspective, this situation violates the seventh commandment. Though no sexual act occurred, the emotional and psychological investment breached the covenant of exclusivity. Jesus' teaching in Matthew 5:28 supports this: "Anyone who looks at a woman lustfully has already committed adultery with her in his heart."
When the man admitted his actions, he sought guidance from a pastor. The church counselor emphasized that the commandment protects not just bodies but hearts and relationships. They discussed accountability, honesty, and steps toward healing. The man eventually apologized, ended the relationship, and attended couples therapy with his wife.
This case illustrates that the seventh commandment is not about rigid rules but about relational integrity. It calls for self-awareness, humility, and repair when trust is broken.
| Transgression Type | Biblical Basis | Is It Adultery? | Key Difference |
|---|---|---|---|
| Sex with a married person | Exodus 20:14; Leviticus 20:10 | Yes | Direct violation of the seventh commandment |
| Sex with an unmarried person | 1 Corinthians 6:18; Matthew 5:28 | No | Not adultery, but still condemned as immoral in many traditions |
| Emotional affair with a married person | Matthew 5:28; Proverbs 6:25 | Debatable | Not physical adultery, but violates trust and exclusivity |
| Coercive sexual contact | Exodus 22:16-17; Deuteronomy 22:25 | Yes, under rape laws | Includes force, lack of consent, or power imbalance |
Understanding the seventh commandment requires distinguishing between literal acts and deeper ethical failures. The commandment is not only about sex-it's about honoring commitments, respecting others' dignity, and maintaining community cohesion.
I once facilitated a small group discussion on marital ethics. A participant shared that he had stopped texting a friend after realizing the conversations were becoming emotionally intimate. He said, "I didn't break the law, but I broke my own promise to my wife." That moment clarified the commandment's enduring weight-not in punishment, but in personal responsibility.