Augustine of Hippo — as excerpted in the Catena Aurea on John 12:44-50

“(Tr. liv. 6) Mean time they waited to know who this one was; so He proceeds: The word that I have spoken, the same shall judge him at the last day. He makes it sufficiently clear that He Himself will judge at the last day. For the word that He speaks, is Himself. He speaks Himself, announces Himself. We gather too from these words that those who have not heard, will be judged differently from those who have heard and despised.”