“You shall not commit adultery.
And you shall not lie sexually with your neighbor's wife and so make yourself unclean with her.
Accordingly, she will be called an adulteress if she lives with another man while her husband is alive. But if her husband dies, she is free from that law, and if she marries another man she is not an adulteress.
Let marriage be held in honor among all, and let the marriage bed be undefiled, for God will judge the sexually immoral and adulterous.
To preserve you from the evil woman, from the smooth tongue of the adulteress. Do not desire her beauty in your heart, and do not let her capture you with her eyelashes; for the price of a prostitute is only a loaf of bread, but a married woman hunts down a precious life. Can a man carry fire next to his chest and his clothes not be burned? Or can one walk on hot coals and his feet not be scorched? ...
If a man is found lying with the wife of another man, both of them shall die, the man who lay with the woman, and the woman. So you shall purge the evil from Israel.
But I say to you that everyone who divorces his wife, except on the ground of sexual immorality, makes her commit adultery, and whoever marries a divorced woman commits adultery.
For you may be sure of this, that everyone who is sexually immoral or impure, or who is covetous (that is, an idolater), has no inheritance in the kingdom of Christ and God.
You then who teach others, do you not teach yourself? While you preach against stealing, do you steal? You who say that one must not commit adultery, do you commit adultery? You who abhor idols, do you rob temples? You who boast in the law dishonor God by breaking the law. For, as it is written, “The name of God is blasphemed among the Gentiles because of you.”
He who commits adultery lacks sense; he who does it destroys himself.
And I say to you: whoever divorces his wife, except for sexual immorality, and marries another, commits adultery.”
*All scriptures are from Bible version: ESV.