1 Corinthians 10:16, 21
1 Corinthians 10:16 CEV
When we drink from the cup we ask God to bless, isn't that sharing in the blood of Christ? When we eat the bread we break, isn't that sharing in the body of Christ?
1 Corinthians 10:21 CEV
You cannot drink from the cup of demons and still drink from the Lord's cup. You cannot eat at the table of demons and still eat at the Lord's table.