1st Corinthians 10:17

14 Wherefore, my beloved, flee from idolatry.

15 I speak as to wise men; judge ye what I say.

16 The cup of blessing which we bless, is it not a communion of the blood of Christ? The bread which we break, is it not a communion of the body of Christ?

17 seeing that we, who are many, are one bread, one body: for we are all partake of the one bread.

18 Behold Israel after the flesh: have not they that eat the sacrifices communion with the altar?

19 What say I 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 would not that ye should have communion with demons.