Sex

Genesis 2:24 - Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Exodus 20:14 - Thou shalt not commit adultery.
Proverbs 6:32 - But whoso committeth adultery with a woman lacketh understanding: he that doeth it destroyeth his own soul.
Matthew 5:28 - But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
1 Corinthians 6:13 - Meats for the belly, and the belly for meats: but God shall destroy both it and them. Now the body is not for fornication, but for the Lord; and the Lord for the body.

1 Corinthians 6:18 - Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.
1 Corinthians 7:2 - Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband.

1 Corinthians 7:5 - Defraud ye not one the other, except it be with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your incontinency.
Colossians 3:5 - Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:
Hebrews 13:4 - Marriage is honorable in all, and the bed undefiled: but whoremongers and adulterers God will judge.