Exodus 22:20: "He that sacrifices unto any god, save unto the LORD only, he shall be utterly destroyed."
Leviticus 20:13: "If a man lies with a man as one lies with a woman, both of them have done what is detestable. they must be put to death
Deuteronomy 13:1-5 "If there arise among you a prophet, ... saying, Let us go after other gods, which thou hast not known, and let us serve them...And that prophet, or that dreamer of dreams, shall be put to death.
Psalms 79:6: "Pour out thy wrath upon the heathen that have not known thee, and upon the kingdoms that have not called upon thy name."
1 Corinthians 10:20-21 "But I say, that the things which the Gentiles sacrifice, they sacrifice to devils, and not to God: and I would not that ye should have fellowship with devils. Ye cannot drink the cup of the Lord, and the cup of devils: ye cannot be partakers of the Lord's table, and of the table of devils."