20 He that sacrifices unto any god, except unto the LORD only, he shall be utterly destroyed.
Exodus 22:20 Cross References - KJ2000
Numbers 21:3
3 And the LORD hearkened to the voice of Israel, and delivered up the Canaanites; and they utterly destroyed them and their cities: and he called the name of the place Hormah.
Numbers 25:2-4
2 And they called the people unto the sacrifices of their gods: and the people did eat, and bowed down to their gods.
3 And Israel joined itself unto Baal of Peor: and the anger of the LORD was kindled against Israel.
4 And the LORD said unto Moses, Take all the heads of the people, and hang them up before the LORD in the sun, that the fierce anger of the LORD may be turned away from Israel.
Numbers 25:7-8
7 And when Phinehas, the son of Eleazar, the son of Aaron the priest, saw it, he rose up from among the congregation, and took a javelin in his hand;
8 And he went after the man of Israel into the tent, and thrust both of them through, the man of Israel, and the woman through her belly. So the plague was stayed from the children of Israel.
Deuteronomy 13:1-15
1 If there arise among you a prophet, or a dreamer of dreams, and gives you a sign or a wonder,
2 And the sign or the wonder comes to pass, of which he spoke unto you, and he says, Let us go after other gods, which you have not known, and let us serve them;
3 You shall not hearken unto the words of that prophet, or that dreamer of dreams: for the LORD your God is testing you, to know whether you love the LORD your God with all your heart and with all your soul.
4 You shall walk after the LORD your God, and fear him, and keep his commandments, and obey his voice, and you shall serve him, and cleave unto him.
5 And that prophet, or that dreamer of dreams, shall be put to death; because he has spoken to turn you away from the LORD your God, who brought you out of the land of Egypt, and redeemed you out of the house of bondage, to thrust you out of the way which the LORD your God commanded you to walk in. So shall you put the evil away from the midst of you.
6 If your brother, the son of your mother, or your son, or your daughter, or the wife of your bosom, or your friend, who is as your own soul, entices you secretly, saying, Let us go and serve other gods, which you have not known, you, nor your fathers;
7 Namely, of the gods of the people who are round about you, near unto you, or far off from you, from the one end of the earth even unto the other end of the earth;
8 You shall not yield unto him, nor hearken unto him; neither shall your eye pity him, neither shall you spare, neither shall you conceal him:
9 But you shall surely kill him; your hand shall be first upon him to put him to death, and afterwards the hand of all the people.
10 And you shall stone him with stones, that he die; because he has sought to thrust you away from the LORD your God, who brought you out of the land of Egypt, from the house of bondage.
11 And all Israel shall hear, and fear, and shall do no more any such wickedness as this is among you.
12 If you shall hear in one of your cities, which the LORD your God has given you to dwell there, anyone saying,
13 Certain men, worthless fellows, are gone out from among you, and have drawn away the inhabitants of their city, saying, Let us go and serve other gods, which you have not known;
14 Then shall you inquire, and make search, and ask diligently; and, behold, if it be truth, and the thing certain, that such abomination is wrought among you;
15 You shall surely strike the inhabitants of that city with the edge of the sword, destroying it utterly, and all that is in it, and the cattle thereof, with the edge of the sword.
Deuteronomy 17:2-5
2 If there be found among you, within any of your gates which the LORD your God gives you, man or woman, that has done wickedness in the sight of the LORD your God, in transgressing his covenant,
3 And has gone and served other gods, and worshiped them, either the sun, or moon, or any of the host of heaven, which I have not commanded;
4 And it be told you, and you have heard of it, and inquired diligently, and, behold, it is true, and the thing certain, that such abomination has been done in Israel:
5 Then shall you bring forth that man or that woman, who has committed that wicked thing, unto your gates, even that man or that woman, and shall stone them with stones, till they die.
Deuteronomy 18:20
20 But the prophet, who shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die.
Joshua 23:15-16
15 Therefore it shall come to pass, that as all good things are come upon you, which the LORD your God promised you; so shall the LORD bring upon you all evil things, until he has destroyed you from off this good land which the LORD your God has given you.
16 When you have transgressed the covenant of the LORD your God, which he commanded you, and have gone and served other gods, and bowed yourselves to them; then shall the anger of the LORD be kindled against you, and you shall perish quickly from off the good land which he has given unto you.