Or thus: When it is said that the Son is the way to the Father, is it meant that He is so by His teaching, or by His nature? We shall be able to see from what follows: If ye had known Me, ye should have known My Father also. In His incarnation asserting His Divinity, He maintained a certain order of sight and knowledge: separating the time of seeing from that of knowing. For Him, who He saith must be known, He speaks of as already seen: that henceforward they might from this revelation have knowledge of the Divine Nature which they had all along seen in Him.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: vii. de Trin