1 Corinthians 10:17

10:17 Because there is one bread, we who are many are one body, for we all share the one bread.

1 Corinthians 11:28

11:28 A person should examine himself first, and in this way let him eat the bread and drink of the cup.

11:23 For I received from the Lord what I also passed on to you, that the Lord Jesus on the night in which he was betrayed took bread,

11:26 For every time you eat this bread and drink the cup, you proclaim the Lord’s death until he comes.

11:27 For this reason, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord.

10:16 Is not the cup of blessing that we bless a sharing in the blood of Christ? Is not the bread that we break a sharing in the body of Christ?