Bible Verses About unmarried sex

Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.

But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.

But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery.

Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,

Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.

Now concerning the things whereof ye wrote unto me: It is good for a man not to touch a woman.

Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband.

Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,

But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;

For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.

Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:

For this is the will of God, even your sanctification, that ye should abstain from fornication:

Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.