1 Corinthians 11:28

28Let examineδοκιμαζέτωhoweverδὲa manἄνθρωποςhimselfἑαυτόν,andκαὶin this mannerοὕτωςofἐκtheτοῦbreadἄρτουlet him eatἐσθιέτωandκαὶofἐκtheτοῦcupποτηρίουlet him drinkπινέτω·

But let a man examine himself, and thus let him eat of the bread, and let him drink of the cup.