1 Corinthians 11:26-28
Context11:26 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. 11:28 A person should examine himself first, 1 and in this way 2 let him eat the bread and drink of the cup.