1 Corinthians 11:26-28

Revised Standard Version Catholic Edition

²⁶ For as often as you eat this bread and drink the cup, you proclaim the Lord’s death until he comes.

Partaking of the Supper Unworthily

²⁷ Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of profaning the body and blood of the Lord. ²⁸ Let a man examine himself, and so eat of the bread and drink of the cup.