7 Bible Verses about Penalties For Serving Other Gods

and a curse if you will not obey the commandments of Jehovah your God, but will turn aside out of the way which I command you today, to go after other gods which you have not known.

If there is found among you, inside any of your gates which Jehovah your God gives you, a man or woman who does what is evil in the sight of Jehovah your God, in breaking His covenant, 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, and if it is told you, and you have heard and inquired carefully, and, behold, it is true and the thing is certain, such abomination is done in Israel;read more.
then you shall bring forth that man or that woman who has committed that evil thing, to your gates, even that man or that woman, and shall stone them with stones until they die. At the mouth of two witnesses or three witnesses shall he that is worthy of death be put to death. At the mouth of one witness he shall not be put to death. The hands of the witnesses shall be first on him to put him to death, and afterwards the hands of all the people. So you shall put the evil away from among you.

One sacrificing to a god, except it is to Jehovah only, he shall be utterly destroyed.

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

if you do not oppress the stranger, the fatherless, and the widow, and do not shed innocent blood in this place, nor walk after other gods to your hurt;

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

But the prophet who shall presume to speak a word in My name which I have not commanded him to speak or who shall speak in the name of other gods, even that prophet shall die.