Exodus 22:20

22:20 “Whoever sacrifices to a god other than the Lord alone must be utterly destroyed.

Deuteronomy 13:5-15

13:5 As for that prophet or dreamer, he must be executed because he encouraged rebellion against the Lord your God who brought you from the land of Egypt, redeeming you from that place of slavery, and because he has tried to entice you from the way the Lord your God has commanded you to go. In this way you must purge out evil from within.

False Prophets in the Family

13:6 Suppose your own full brother, your son, your daughter, your beloved wife, or your closest friend should seduce you secretly and encourage you to go and serve other gods that neither you nor your ancestors have previously known, 13:7 the gods of the surrounding people (whether near you or far from you, from one end of the earth to the other). 13:8 You must not give in to him or even listen to him; do not feel sympathy for him or spare him or cover up for him. 13:9 Instead, you must kill him without fail! Your own hand must be the first to strike him, and then the hands of the whole community. 13:10 You must stone him to death because he tried to entice you away from the Lord your God, who delivered you from the land of Egypt, that place of slavery. 13:11 Thus all Israel will hear and be afraid; no longer will they continue to do evil like this among you.

Punishment of Community Idolatry

13:12 Suppose you should hear in one of your cities, which the Lord your God is giving you as a place to live, that 13:13 some evil people have departed from among you to entice the inhabitants of their cities, saying, “Let’s go and serve other gods” (whom you have not known before). 13:14 You must investigate thoroughly and inquire carefully. If it is indeed true that such a disgraceful thing is being done among you, 13:15 you must by all means slaughter the inhabitants of that city with the sword; annihilate with the sword everyone in it, as well as the livestock.

Deuteronomy 17:2-5

17:2 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 17:3 by serving other gods and worshiping them – the sun, moon, or any other heavenly bodies which I have not permitted you to worship. 17:4 When it is reported to you and you hear about it, you must investigate carefully. If it is indeed true that such a disgraceful thing is being done in Israel, 17:5 you must bring to your city gates that man or woman who has done this wicked thing – that very man or woman – and you must stone that person to death.

Deuteronomy 17:1

17:1 You must not sacrifice to him a bull or sheep that has a blemish or any other defect, because that is considered offensive to the Lord your God.

Deuteronomy 18:1

Provision for Priests and Levites

18:1 The Levitical priests – indeed, the entire tribe of Levi – will have no allotment or inheritance with Israel; they may eat the burnt offerings of the Lord and of his inheritance.