7 Bible Verses about Penalties For Serving Other Gods

and the curse, if you shall not listen to the commandments of the LORD your God, but turn aside out of the way which I command you this day, to go after other gods, which you have not known.

If there is found in the midst of you, within any of your gates which the LORD your God gives you, man or woman, who does that which is evil in the sight of the LORD your God, in transgressing his covenant, and has gone and served other gods, and worshiped them, or the sun, or the moon, or any of the host of heaven, which I have not commanded; and it be told you, and you have heard of it, then you shall inquire diligently; and behold, if it be true, and the thing certain, that such abomination is done in Israel,read more.
then you shall bring forth that man or that woman, who has done this evil thing, to your gates, even the man or the woman; and you shall stone them to death with stones. At the mouth of two witnesses, or three witnesses, shall he who is to die be put to death; at the mouth of one witness he shall not be put to death. The hand of the witnesses shall be first on him to put him to death, and afterward the hand of all the people. So you shall put away the evil from the midst of you.

"He who sacrifices to any god, except to the LORD only, shall be utterly destroyed.

But if your heart turns away, and you will not hear, but shall be drawn away, and worship other gods, and serve them;

if you do not oppress the foreigner, the fatherless, and the widow, and do not shed innocent blood in this place, neither walk after other gods to your own hurt:

They shall not dwell in your land, lest they make you sin against me, for if you serve their gods, it will surely be a snare to you."

But the prophet, who shall speak a word presumptuously in my name, which I have not commanded him to speak, or who shall speak in the name of other gods, that same prophet shall die."