Exodus 22:20
"Whoever sacrifices to a god other than the Lord alone must be utterly destroyed.
Deuteronomy 17:2-5
Suppose a man or woman is discovered among you -- in one of your villages that the Lord your God is giving you -- who sins before the Lord your God and breaks his covenant
Numbers 25:7-8
When Phinehas son of Eleazar, the son of Aaron the priest, saw it, he got up from among the assembly, took a javelin in his hand,
Deuteronomy 13:1-15
Suppose a prophet or one who foretells by dreams should appear among you and show you a sign or wonder,
Deuteronomy 18:20
"But if any prophet presumes to speak anything in my name that I have not authorized him to speak, or speaks in the name of other gods, that prophet must die.
Numbers 21:3
The Lord listened to the voice of Israel and delivered up the Canaanites, and they utterly destroyed them and their cities. So the name of the place was called Hormah.
Numbers 25:2-4
These women invited the people to the sacrifices of their gods; then the people ate and bowed down to their gods.
Joshua 23:15-16
But in the same way every faithful promise the Lord your God made to you has been realized, it is just as certain, if you disobey, that the Lord will bring on you every judgment until he destroys you from this good land which the Lord your God gave you.