'Committing Adultery' in the Bible

And I saw [that even though Judah knew] that for all the acts of adultery (idolatry) of faithless Israel, I [the Lord] had sent her away and given her a certificate of divorce, yet her treacherous sister Judah was not afraid; but she went and was a prostitute also [following after idols].

Because of the thoughtlessness of Israel’s prostitution [her immorality mattered little to her], she desecrated the land and committed adultery with [idols of] stones and trees.

Stealing, murdering, and committing adultery, And swearing to falsehood, and giving perfume to Baal, And going after other gods whom ye knew not.

And in prophets of Jerusalem I have seen a horrible thing, Committing adultery, and walking falsely, Yea, they strengthened the hands of evil doers, So that they have not turned back Each from his wickedness, They have been to me -- all of them -- as Sodom, And its inhabitants as Gomorrah.

because they have committed an outrage in Israel by committing adultery with their neighbors’ wives and have spoken a lie in My name, which I did not command them. I am He who knows, and I am a witness.” This is the Lord’s declaration.