'Adultery' in the Bible

"You have heard that it was said, 'You shall not commit adultery;'

but I tell you that everyone who gazes at a woman to lust after her has committed adultery with her already in his heart.

but I tell you that whoever puts away his wife, except for the cause of sexual immorality, makes her an adulteress; and whoever marries her when she is put away commits adultery.

I tell you that whoever divorces his wife, except for sexual immorality, and marries another, commits adultery; and he who marries her when she is divorced commits adultery."

He said to him, "Which ones?" Jesus said, "'You shall not murder.' 'You shall not commit adultery.' 'You shall not steal.' 'You shall not offer false testimony.'