1 Corinthians 11:27-29

27Since that is true, you must be careful. Eat the bread and drink from the cup in a way that is right. Anyone who does not do that will be guilty. They are showing that they do not respect the Lord's body and his blood that he offered as a sacrifice.

28So everyone must think carefully about how they eat the bread and they drink from the cup.

29They must understand how important the Lord's body is. If anyone does not recognize this, God will punish them.