11 For what follows? “There shall draw near a man and a deep heart.” They said, Who shall see us? They failed in searching searchings, evil counsels. There drew near a man to those same counsels, He suffered Himself to be held as a man. For He would not have been held except He were man, or have been seen except He were man, or have been smitten except He were man, or have been crucified or have died except He were man. There drew near a man therefore to all those sufferings, which in Him would have been of no avail except He were Man.
But if He were not Man, there would not have been deliverance for man. There has drawn near a Man “and a deep heart,” that is, a secret “heart:” presenting before human faces Man, keeping within God: concealing the “form of God,” wherein He is equal with the Father, and presenting the form of a servant, wherein He is less than the Father. For Himself has spoken of both: but one thing there is which He says in the form of God, another thing in the form of a servant. He has said in the form of God, “I and the Father are one:” He has said in the form of a servant, “For the Father is greater than I.” Whence in the form of God says He, “I and the Father are one”?...
Source: The Enarrations, or Expositions, on the Psalms (New Advent)