Bede the Venerable — as excerpted in the Catena Aurea on John 17:6-8

“And they have kept Thy word. He calls Himself the Word of the Father, because the Father by Him created all things, and because He contains in Himself all words: as if to say, They have committed Me to memory so well, that they never will forget Me. Or, They have kept Thy word, i. e. in that they have believed in Me: as it follows, Now they have known that all things whatsoever Thou hast given Me, are of Thee. Some read, Now I have known, &c. But this cannot be correct. For how could the Son be ignorant of what was the Father’s? It is the disciples He is speaking of; as if to say, They have learnt that there is nothing in Me alien from Thee, and that whatever I teach cometh from Thee.”