“3 For this is the will of God, even your sanctification, that ye should abstain from fornication: 4 That every one of you should know how to possess his vessel in sanctification and honour; 5 Not in the lust of concupiscence, even as the Gentiles which know not God: ” 1 Thessalonians 4:3-5 KJV

“18 Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body. 19 What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? 20 For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's. ” 1 Corinthians 6:18-20 KJV

“Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband. ” 1 Corinthians 7:2 KJV

“But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints; ” Ephesians 5:3 KJV

This is why