Theophylact of Ohrid
Catena Aurea · Johannesevangelium 3
He that cometh from above is above all: he that is of the earth is earthly, and speaketh of the earth: he that cometh from heaven is above all. And what he hath seen and heard, that he testifieth; He that is of the earth is of the earth; i. e. is earthly, and speaketh of the earth, speaketh earthly things.
When ye hear then, that Christ speaketh what He saw and heard from the Father, do not suppose that He needs to be taught by the Father; but only that that knowledge, which He has naturally, is from the Father. For this reason He is said to have heard, whatever He knows, from the Father.