Charles Spurgeon Commentary 1 Corinthians 10:20-21

"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. Ye cannot drink the cup of the Lord, and the cup of demons: ye cannot partake of the table of the Lord, and of the table of demons." — 1 Corinthians 10:20-21 (ASV)

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:

It cannot be; there must be a separation between these two things. We cannot have any delight in idol-worship, and yet worship the Christ of God.