Hosea 3:3

And I said unto her, Thou shalt abide for me many days; thou shalt not play the harlot, and thou shalt not be for another man: so will I also be for thee.

Cross-reference

Jeremiah 2:20 uses the same 'whoring' metaphor for Israel's unfaithfulness, reinforcing the theme of the covenant people as an adulterous wife.