John Chrysostom
'I pray for them.' What are Thou saying? Dost Thou teach the Father, as though He did not know? Dost Thou speak with Him as with an ignorant man? What, indeed, does this distinction mean?
Do you see that He prays for no other reason than to show the love He has for them? Whoever not only gives what is His own, but also asks another for the same thing, truly shows great love.
What, then, does 'I pray for them, not for all' mean? It means 'not for the world, but for those whom Thou hast given Me.'
He often repeats the word 'Thou hast given' to show that this is pleasing to the Father.
Then, because He had often said, 'They are Thine' and 'Thou hast given them to Me,' someone might suppose that His authority is recent and that He has only now received them.
Read more (280 words)
To remove this wrong thought, He says, 'All Mine are Thine, and Thine are Mine; and I am glorified in them' (Jn 17:10).
Do you see the equality of honor? When you hear, 'Thou hast given them to Me,' do not think they are now estranged from the Father's authority, for all that is Mine belongs to Him.
Likewise, when you hear, 'They were Thine,' do not think they were strangers to Me, for all that belongs to Him is Mine.
Thus 'Thou hast given' is said only by way of condescension. Everything the Father has belongs to the Son, and everything the Son has belongs to the Father.
This cannot be said even of the Son according to His humanity. Rather, it is said of Him because He is more than man.
Everyone knows that what belongs to the lesser belongs to the greater, but not conversely. Here the converse is also said, and this shows equality.
Christ showed the same thing elsewhere when, speaking about knowledge, He said, 'All that the Father has is Mine' (Jn 16:15).
The expressions 'Thou hast given Me' and all similar expressions show that He did not come as a stranger and draw them to Himself, but received them as His own.
Then He presents the reason and proof, saying, 'and I am glorified in them.' This means either that I have authority over them, or that they will glorify Me, believing in Thee and in Me and glorifying both equally.
If He were not glorified in them equally, then what belongs to the Father would no longer belong to Him. No one is glorified by that over which he has no authority.