'Adultery' in the Bible

But as a wife that committeth adultery, which taketh strangers instead of her husband!

I'll judge you with the same standards by which I issue verdicts against a woman who commits adultery and murder. I'll avenge the blood you've shed with impassioned wrath.

That they have committed adultery, and blood is in their hands, and with their idols have they committed adultery, and have also caused their sons, whom they bare unto me, to pass for them through the fire, to devour them.

Then I said concerning this woman worn out by adultery: Will they now have illicit sex with her, even her?

But upright men will punish them appropriately for their adultery and bloodshed, because they are adulteresses and blood is on their hands.