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What does the Bible say about sexual purity?

The Bible consistently teaches that sexual intimacy is a sacred gift from God, designed exclusively for the marriage covenant between one man and one woman. This understanding forms the bedrock of biblical sexual purity, which calls believers to honor God with their bodies and in their relationships. While cultural norms often shift, God’s Word provides a timeless framework for healthy sexuality, emphasizing faithfulness, self-control, and respect for others. Embracing biblical purity leads to deeper intimacy with God and others, protecting us from the destructive consequences of sin.

Sexual purity in the Bible means reserving sexual intimacy for the covenant of marriage between a man and a woman, honoring God with our bodies.

By Mohau Tshabangu · Founding editor & lead writer · How we review

God's Design for Sexuality From the very beginning, the Bible presents sexuality as an integral part of God's good creation. In Genesis, we read that "God created mankind in his own image, in the image of God he created them; male and female he created them" (Genesis 1:27). The creation narrative continues by describing the union of husband and wife: "That is why a man leaves his father and mother and is united to his wife, and they become one flesh" (Genesis 2:24). This "one flesh" union signifies a profound physical, emotional, and spiritual bond, intended to be both exclusive and lifelong. This foundational passage establishes marriage as the proper and God-ordained context for sexual expression.

The Call to Purity Throughout both the Old and New Testaments, there is a clear and consistent call to sexual purity. The Ten Commandments include, "You shall not commit adultery" (Exodus 20:14), which prohibits sexual infidelity within marriage. The New Testament expands on this, with Jesus teaching that lustful thoughts are akin to adultery in the heart (Matthew 5:28). The Apostle Paul frequently addresses sexual immorality (porneia), urging believers to "flee from sexual immorality" (1 Corinthians 6:18). He emphasizes that our bodies are temples of the Holy Spirit and should therefore be used to glorify God (1 Corinthians 6:19-20).

Common New Testament terms for sexual sin, such as porneia (often translated as sexual immorality, fornication, or prostitution), encompass a broad range of sexual acts outside of the marriage covenant. This would include premarital sex, extramarital affairs, incest, and prostitution. While the term is broad, its consistent application points to any sexual activity that violates God's design for marriage.

Practical Implications for Believers For Christians, living a sexually pure life involves several practical commitments. It means abstaining from sexual activity outside of marriage. This includes not only physical acts but also guarding our thoughts and desires, as Jesus taught (Matthew 5:28). It also means cultivating faithfulness and honor within marriage, treating one's spouse with love and respect.

The Bible also encourages self-control and discipline. Paul writes, "But among you there must not be even a hint of sexual immorality, or of any kind of impurity, or of greed, because these are improper for God’s holy people" (Ephesians 5:3). This pursuit of purity is not a legalistic burden but a pathway to freedom and flourishing, protecting individuals and relationships from the pain and brokenness that often accompany sexual sin. When we fail, grace and repentance are always available through Christ (1 John 1:9).

While some passages in the Bible explicitly address specific sexual acts, it's important to remember that the overarching principle is honoring God's design for sexual intimacy within the covenant of marriage. Different Christian traditions may interpret the specific boundaries around sexual expression with varying degrees of strictness, especially concerning matters where the Bible is less explicit. However, the core teaching remains consistent: sexual activity outside the lifelong, exclusive union of a man and a woman is contrary to God's will.

God's Grace and Forgiveness For those who have fallen short of God's ideal for sexual purity, the Bible offers profound hope and forgiveness. John writes, "If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness" (1 John 1:9). God's grace through Jesus Christ provides a path to repentance, healing, and a renewed commitment to purity. This is not about condemnation, but about restoration and the opportunity to live in alignment with God's loving design for our lives.

Bible verses about purity

"Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh."

Genesis 2:24

"Thou shalt not commit adultery."

Exodus 20:14

"but I say unto you, that every one that looketh on a woman to lust after her hath committed adultery with her already in his heart."

Matthew 5:28

"Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body."

1 Corinthians 6:18

"Or know ye not that your body is a temple of the Holy Spirit which is in you, which ye have from God? and ye are not your own; for ye were bought with a price: glorify God therefore in your body."

1 Corinthians 6:19-20

"But fornication, and all uncleanness, or covetousness, let it not even be named among you, as becometh saints;"

Ephesians 5:3

"If we confess our sins, he is faithful and righteous to forgive us our sins, and to cleanse us from all unrighteousness."

1 John 1:9

Frequently asked

What is 'sexual immorality' (porneia) in the Bible?

In the New Testament, the Greek word *porneia* is a broad term often translated as 'sexual immorality,' 'fornication,' or 'prostitution.' It refers to any sexual activity outside of the God-ordained covenant of marriage between one man and one woman. This includes premarital sex, adultery, homosexual acts, incest, and bestiality. It’s a comprehensive term used to distinguish ungodly sexual behavior from God's holy design for human sexuality within marriage.

Does the Bible address premarital sex?

Yes, while the Bible does not use the specific term 'premarital sex,' its consistent teaching on sexual purity and the sanctity of marriage implicitly condemns it. Passages that speak against *porneia* (sexual immorality) are understood to include sexual activity before marriage, as such acts occur outside the covenantal union God designed. The call for believers to flee sexual immorality (1 Corinthians 6:18) reinforces the expectation that sexual intimacy is reserved for marriage.

How can someone pursue sexual purity after making mistakes?

The Bible offers a path of repentance, forgiveness, and renewal for those who have fallen short of God's standard of sexual purity. First John 1:9 assures us, "If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness." This involves acknowledging sin, turning away from it, and seeking God's grace. It also often includes seeking accountability, developing healthy boundaries, and focusing on a growing relationship with Christ, who empowers us to live in newness of life.

Is biblical sexual purity only about avoiding certain acts?

While abstaining from unbiblical sexual acts is a key component of sexual purity, the Bible teaches that it is much more comprehensive. It's also about a heart attitude and honoring God with our entire being. Jesus taught that lustful thoughts are a form of adultery (Matthew 5:28), indicating that purity extends to our minds and desires. It involves cultivating self-control, respecting others, and viewing sexuality as a sacred gift to be stewarded according to God's loving design within the context of marriage, rather than defining it by merely avoiding specific behaviors.

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