Exodus 34:13-16

13Rather you must destroy their altars, smash their images, and cut down their Asherah poles.

14For you must not worship any other god, for the Lord, whose name is Jealous, is a jealous God.

15Be careful not to make a covenant with the inhabitants of the land, for when they prostitute themselves to their gods and sacrifice to their gods, and someone invites you, you will eat from his sacrifice;

16and you then take his daughters for your sons, and when his daughters prostitute themselves to their gods, they will make your sons prostitute themselves to their gods as well.