I speak that which I have seen with my Father: and ye do that which ye have seen with your father. I speak that which I have seen - I speak nothing but that unchangeable, eternal truth which I have received from the bosom of God.
Ye do that which ye have seen - Instead of ἑωρακατε, ye have seen, I think we should read ηκουσατε, ye have heard, on the authority of BCKL, fifteen others; Coptic, Ethiopic, Armenian, later Syriac in the margin, Gothic, one copy of the Itala; Origen, Cyril, and Chrysostom. This reading, says Bishop Pearce, (who has adopted it), seems preferable to the other, because it could not be said, with the same propriety, that the Jews had seen any thing with their father the devil, as it could that Jesus had seen with his.
Jesus saw the Father, for he was the Word that was with God from eternity. The Jews did not see, they only felt and heard, their father the devil. It is the interest of Satan to keep himself out of sight, and to work in the dark.