'Adultery' in the Bible

And I saw that {for this very reason, that} on account of apostate Israel committing adultery I divorced her and gave the letter of divorce to her. Yet her treacherous sister Judah was not afraid and she went and prostituted [herself] also.

And it was because of the frivolity of her fornication that she defiled the land and committed adultery with the stone and with the tree.

"{How} can I forgive you? Your children have forsaken me, and they have sworn by [those who are] not gods. But I fed them to the full, and they committed adultery, and flocked [to] the house of a prostitute.

Will you steal? Will you murder? And will you commit adultery? And will you swear {falsely}? And will you make a smoke offering to the Baal? And will you go after other gods whom you have not known?

And in the prophets of Jerusalem I have seen something horrible. They commit adultery, and they walk in lies, and they make strong [the] hands of evildoers, [so] that they have not turned back each from his wickedness. All of them have become to me like Sodom, and its inhabitants like Gomorrah.

because they have done a disgraceful thing in Israel, and they have committed adultery with the wives of their neighbors, and they have spoken words in my name, lies that I have not commanded them, and I [am] he who knows, and [I am] a witness,' {declares} Yahweh."