1 Corinthians 10:16
16 aThe cup of blessing that we bless, is it not a participation in the blood of Christ? bThe bread that we break, is it not a participation in the body of Christ?
1 Corinthians 11:27
27 aWhoever, therefore, eats the bread or drinks the cup of the Lord bin an unworthy manner will be guilty concerning cthe body and blood of the Lord.