1 Corinthians 10:16; 1 Corinthians 11:24

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

24 And when he had given thanks, he brake it, and said,Take, eat: this is my body, which is broken for you: this do in remembrance of me.