'Adultery' in the Bible

"You have heard that it was said, 'Thou shalt not commit adultery.'

But I tell you that every man who puts away his wife except on the ground of unfaithfulness causes her to commit adultery, and whoever marries her when so divorced commits adultery.

For out of the heart proceed wicked thoughts, murder, adultery, fornication, theft, perjury, impiety of speech.

And I tell you that whoever divorces his wife for any reason except her unfaithfulness, and marries another woman, commits adultery."

"Which Commandments?" he asked. Jesus answered, "'Thou shalt not kill;' 'Thou shalt not commit adultery;' 'Thou shalt not steal;' 'Thou shalt not lie in giving evidence;'