Alcuin
Catena Aurea · Johannesevangelium 8
The Pharisees therefore said unto him, Thou bearest record of thyself; thy record is not true. Jesus answered and said unto them, Though I bear record of myself, yet my record is true: for I know whence I came, and whither I go; but ye cannot tell whence I come, and whither I go. Ye judge after the flesh; I judge no man. And yet if I judge, my judgment is true: for I am not alone, but I and the Father that sent me. It is also written in your law, that the testimony of two men is true. I am one that bear witness of myself, and the Father that sent me beareth witness of me.
As if our Lord Himself were the only (one that bore) witness to Himself; whereas the truth was that He had, before His incarnation, sent many witnesses to prophesy of His Sacraments.