1 Corinthians 10:20 in the King James Version
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.
Context
19 What am I saying then? That a thing sacrificed to idols is anything, or that an idol is anything?
20 But I say that the things which the Gentiles sacrifice, they sacrifice to demons and not to God, and I don’t desire that you would have fellowship with demons.
21 You can’t both drink the cup of the Lord and the cup of demons. You can’t both partake of the table of the Lord and of the table of demons.