Deuteronomy 7:2-5
2 and when the Lord your God delivers them over to you and you defeat them, you must completely destroy them. Make no treaty with them and show them no mercy.
3 Do not intermarry with them. Do not give your daughters to their sons or take their daughters for your sons,(A)
4 because they will turn your sons away from Me to worship other gods. Then the Lord’s anger will burn against you, and He will swiftly destroy you.
5 Instead, this is what you are to do to them: tear down their altars, smash their sacred pillars, cut down their Asherah poles,(B) and burn up their carved images.