The Law of Chastity: Sexual Purity Standards in The Church of Jesus Christ of Latter-day Saints

An overview of the principles and practices of sexual purity taught and expected within the LDS Church.

By Garret Merkley · Explainer · Aug 13, 2026

Branched from What the LDS Church Requires for Temple Access

Quick take

The Law of Chastity requires complete sexual purity before and within marriage.
It means no sexual relations outside of marriage and absolute fidelity within it.
This law extends to thoughts, words, and actions, promoting modesty and respect for the body.
Adherence is a fundamental requirement for temple worship and spiritual progression in the LDS Church.

The Law of Chastity in The Church of Jesus Christ of Latter-day Saints is a divine commandment requiring complete sexual purity. It teaches that sexual relations are reserved exclusively for a man and a woman who are legally and lawfully married to each other.

Defining Sexual Purity

This law prohibits all sexual activity outside of marriage. This includes premarital sex, extramarital affairs, and homosexual relations. It also encompasses actions like pornography, masturbation, and any thoughts, words, or actions that are sexually suggestive or arouse sexual feelings outside the bounds of marriage. The standard is absolute and applies to both men and women.

Fidelity and Modesty

Within marriage, the Law of Chastity requires absolute fidelity and loyalty to one's spouse. Beyond physical acts, it also emphasizes mental and emotional purity, encouraging members to avoid lustful thoughts and to treat others with respect. Modesty in dress, speech, and behavior is taught as a way to honor the body and avoid tempting oneself or others.

The Sacred Purpose of Sexual Intimacy

The Church teaches that sexual intimacy within marriage is sacred and divinely appointed for two main purposes: the procreation of children and the expression of love, strengthening the bond between husband and wife. It is seen as a powerful, holy experience meant to be shared only within the covenant of marriage.

Adherence to the Law of Chastity is considered essential for spiritual well-being and is a prerequisite for participating in sacred temple ordinances, such as temple marriage and eternal sealing. Members believe that living this law brings increased self-respect, stronger families, protection from emotional and spiritual harm, and a closer relationship with God. It is seen as a foundational principle for building a righteous life and preparing for eternal life.

Does the Law of Chastity apply to thoughts and feelings?

Yes, the Law of Chastity extends beyond physical actions to include pure thoughts, words, and desires. Members are encouraged to control their thoughts and avoid anything that might lead to impure actions or feelings.

What if someone has made mistakes regarding the Law of Chastity?

The Church teaches about repentance and forgiveness through Jesus Christ. Individuals who have violated the Law of Chastity can repent, confess their sins, and receive forgiveness, allowing them to return to full fellowship and temple worthiness.

Is there an age at which the Law of Chastity begins to apply?

The principles of chastity are taught from a young age, with the expectation that individuals live by them as they reach an age of accountability and moral understanding. It applies to all unmarried individuals capable of understanding its principles, regardless of age.

How does the Law of Chastity relate to LGBTQ+ individuals?

The Church's doctrine defines marriage exclusively as between a man and a woman. Therefore, the Law of Chastity requires LGBTQ+ individuals to abstain from sexual relations outside of a heterosexual marriage, meaning they are expected to live a chaste, celibate life if they do not enter such a marriage.

Sources

General Handbook: “Chastity,” The Church of Jesus Christ of Latter-day Saints.
For the Strength of Youth: A Guide for Making Choices, The Church of Jesus Christ of Latter-day Saints.