7 Bible Verses about Penalties For Serving Other Gods

and the curse, if you [do] not listen to the commandments of Yahweh your God, but [rather] you turn from the way that I [am] commanding you {today} to go after other gods that you have not known.

If [there] is found in one of your {towns} that Yahweh your God [is] giving to you a man or a woman that does evil in the eyes of Yahweh your God to transgress his covenant and by going and serving other gods and [so] he bows down to them and to the sun or to the moon or to any [of] the host of heaven {which I have forbidden}, and it is reported to you or you hear [about it] and you enquire [about it] thoroughly and, indeed, [the] trustworthiness of the deed [has] been established, it {has occurred}, this detestable thing, in Israel,read more.
then you shall bring out that man or that woman who has done this evil thing to your gates; that is, the man or the woman, and you shall stone them with stones {to death}. {On the evidence of} two or three witnesses {the person shall be put to death}. The person shall not be put to death by the mouth of one witness. The hand of the witnesses shall be first against the person to kill the person, and afterward the hands [of] all the people, and [so] you shall purge the evil from your midst.

" 'Whoever sacrifices to the gods--not to Yahweh, to him alone--will be destroyed.

However, if your heart turns aside and you [do] not listen and you are lured away and you bow down to other gods and you serve them,

you do not oppress [the] alien, [the] orphan, and [the] widow, you do not shed innocent blood in this place, and you do not go after other gods {to your harm},

They will not live in your land, lest they cause you to sin against me when you serve their gods, for it will be a snare to you.'"

However, the prophet that behaves presumptuously by speaking a word in my name that I have not commanded him to speak, and who speaks in the name of other gods, then that prophet shall die.'