If he discern not the body (μη διακρινων το σωμα). So-called conditional use of the participle, "not judging the body." Thus he eats and drinks judgment (κριμα) on himself. The verb δια-κρινω 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.