The Bible contains many passages that speak about sexuality and sexual behavior, and the Christian faith has traditionally placed a strong emphasis on chastity and sexual purity. In general, the Bible teaches that sex is a gift from God to be enjoyed within the confines of marriage between a man and a woman.
Fornication is typically defined as sexual intercourse between two people who are not married to each other, and many passages in the Bible speak against it because it is considered to be a violation of God's plan for human sexuality. Some people believe that engaging in sexual activity outside of marriage can lead to negative consequences, both physical and emotional, and that it can damage relationships and undermine the bonds of commitment and trust that are necessary for a healthy marriage.
Yes, the Bible does indeed condemn fornication, which is generally defined as sexual activity outside of marriage. In the New Testament, the Greek word that is often translated as "fornication" is "porneia", which can refer to a wide range of sexual sins, including adultery, premarital sex, and prostitution. For example, in the book of Matthew, Jesus says, "You have heard that it was said, 'You shall not commit adultery.' But I say to you that everyone who looks at a woman with lustful intent has already committed adultery with her in his heart" (Matthew 5:27-28). This passage teaches that even thoughts of sexual sin are wrong and can be considered a form of fornication.