7 But what human language will suffice to explain how the Father gave those words to the Son? The question, of course, will appear easier if we suppose Him to have received such words in His capacity as the Son of man. And yet, although thus born of the Virgin, who will undertake to relate when and how it was that He learned them, since even that very generation which He had of the Virgin who will venture to declare? But if our idea be that He received these words of the Father in His capacity as begotten of, and co-eternal with, the Father, let us then exclude all such thoughts of time as if He existed previous to His possessing them, and so received the possession of that which He had not before; for whatever God the Father gave to God the Son, He gave in the act of begetting. For the Father gave those things to the Son without which He could not be the Son, in the same manner as He gave Him being itself. For how otherwise would He give any words to the Word, wherein in an ineffable way He has spoken all things? But now, in reference to what follows, you must defer your expectations till another discourse.
Source: Tractates on the Gospel of John (New Advent)