Matthew 26:26-29
26  And as they were eating, Jesus took bread, and blessed it, and brake it, and gave it to the disciples, and said, Take, eat; this is my body.
27  And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it;
28  For this is my blood of the new testament, which is shed for many for the remission of sins.

 

1 Corinthians 11:26-29
26  For as often as ye eat this bread, and drink this cup, ye do shew the Lord's death till he come.
27  Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.
28  But let a man examine himself, and so let him eat of that bread, and drink of that cup.
29  For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body.