Flee sexual immorality. Every sin that a man does is outside the body, but he who commits sexual immorality sins against his own body. (1 Corinthians 6:18, NKJV)
Like the citizens of Corinth when the apostle Paul visited their city, many people today believe fornication (sexual immorality) is normal and natural, and no violation of social norms or divine truth. Yet, the Bible is clear. It violates God’s will. God intends us to use our bodies for holiness, not to fulfill sinful passions (1 Thess. 4:3-7). To commit sexual immorality (whether it is premarital sex, adultery – whether homosexual or heterosexual, bestiality, incest or pedophilia) is to sin against God and against the purpose He gave the body. Every sin we commit begins in the mind (“outside the body”), as Jesus taught in Mark 7:20-23. Sexually immorality is antagonistic to the very purpose God gave your body – to give glory to God as His dwelling place (1 Cor. 6:19-20). It is not love when sexual activity occurs outside of God-endorsed marriage; it is dishonorable in His sight. This is God’s judgment: “Marriage is honorable among all, and the bed undefiled; but fornicators and adulterers God will judge” (Heb. 13:4). Christians are “joined to the Lord,” therefore, we must not join ourselves to a harlot (1 Cor. 6:16-18). Keep both mind and body pure, and serve the Lord in holiness.