The greatest thing that can be said of Jesus' knowledge is that he knows God perfectly. He knows God perfectly because he is God. We know God partially and imperfectly, Jesus knows him like no other being knows him. He knows him the way an omniscient person knows himself. "All things have been handed over to me by my Father, and no one knows the Son except the Father, and no one knows the Father except the Son and anyone to whom the Son chooses to reveal him" (Matthew 11:27). No one but Jesus knows the Father immediately, completely, and perfectly. Our knowledge of the Father depends wholly on Jesus' gracious revelation; our knowledge is derivative and partial and, because of our sin, imperfect.
John Piper, Seeing and Savoring Jesus Christ