Deuteronomy 7:3-5

3 Don’t marry any of them, and don’t let your sons or daughters marry any of the people from those other nations.

4 If you do, they will turn your children away from following me. Then your children will serve other gods, and the LORD will be very angry with you. He will quickly destroy you!

5 “This is what you must do to those nations: You must smash their altars and break their memorial stones into pieces. Cut down their Asherah poles and burn their statues.