Webster(i)
18 Behold Israel after the flesh: are not they who eat of the sacrifices, partakers of the altar?
19 What then do I say? that the idol is any thing, or that which is offered in sacrifice to idols is any thing?
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 fellowship with demons.
21 Ye cannot drink the cup of the Lord, and the cup of demons: ye cannot be partakers of the Lord's table, and of the table of demons.