Deuteronomy 12:2-4

2 You shall surely destroy all the places in which the nations that you shall dispossess served their gods, on the high mountains, and on the hills, and under every green tree:
3 and you shall break down their altars, and dash in pieces their pillars, and burn their Asherim with fire; and you shall cut down the engraved images of their gods; and you shall destroy their name out of that place.
4 You shall not do so to the LORD your God.