If he discern not the body (mh diakrinwn to swma). So-called conditional use of the participle, "not judging the body." Thus he eats and drinks judgment (krima) on himself. The verb dia-krinw is an old and common word, our dis-cri-minate, to distinguish. Eating the bread and drinking the wine as symbols of the Lord's body and blood in death probes one's heart to the very depths.