What does the Bible say about sexual sin?

The Bible speaks about sexual sin more directly and more extensively than many people realise — and more graciously than many people expect. I want to give you both the clarity and the compassion that Scripture itself offers.

The biblical standard is clear: sexual intimacy belongs within the covenant of marriage between a man and a woman. This is not an arbitrary religious rule — it is grounded in the creation design of Genesis 2:24: "Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh." Jesus reaffirmed this design in Matthew 19:4-

1. Within that covenant, sex is a beautiful, God-given gift (Song of Solomon, 1 Corinthians 7:3-5).

Outside that covenant — whether premarital sex (fornication), extramarital sex (adultery), or homosexual practice — the Bible consistently describes as porneia, the broad Greek term for sexual immorality, which Paul lists among the works of the flesh (Galatians 5:19) and which he says those who practise will not inherit the kingdom of God (1 Corinthians 6:9-10).

But the very next verse — 1 Corinthians 6:11 — is crucial and often overlooked: "And such were some of you. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God." The church at Corinth contained people who had come out of every kind of sexual sin. The gospel is for them. It is for everyone.

Sexual sin is serious — Paul says in 1 Corinthians 6:18 that it is uniquely damaging because it is a sin against one's own body. But it is not unforgivable, not beyond the reach of grace, and not the defining identity of the person who has struggled with it. The blood of Christ cleanses from all unrighteousness (1 John 1:7).

The church's call is to hold the standard clearly and to hold the struggling person compassionately — just as Jesus held both when He told the woman caught in adultery: "Neither do I condemn you; go, and from now on sin no more." (John 8:11).