1 Corinthians 11:27

27ThereforeὭστεwhoeverὃςἂνshould eatἐσθίῃtheτὸνbreadἄρτονorἢshould drinkπίνῃtheτὸcupποτήριονof theτοῦLordκυρίουunworthilyἀναξίως,guiltyἔνοχοςwill beἔσταιof theτοῦbodyσώματοςandκαὶof theτοῦbloodαἵματοςof theτοῦLordκυρίου.

Therefore, whoever may eat the bread or may drink the cup of the Lord unworthily will be guilty of the body and of the blood of the Lord.