Augustine of Hippo
Catena Aurea · Johannesevangelium 17
I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine. And all mine are thine, and thine are mine; and I am glorified in them. And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are. While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled. And now come I to thee; and these things I speak in the world, that they might have my joy fulfilled in themselves.
(Tr. cvi. 6) It is sufficiently apparent from hence, that all things which the Father hath, the Only-Begotten Son hath; hath in that He is God, born from the Father, and equal with the Father; not in the sense in which the elder son is told, All that I have is thine. (Luke 15:31) For all there means all creatures below the holy rational creature, but here it means the very rational creature itself, which is only subjected to God. Since this is God the Father’s, it could not at the same time be God the Son’s, unless the Son were equal to the Father. For it is impossible that saints, of whom this is said, should be the property of any one, except Him who created and sanctified them. When He says above in speaking of the Holy Spirit, All things that the Father hath are Mine, (c. 16:15) He means all things which pertain to the divinity of the Father; for He adds, He (the Holy Ghost) shall receive of Mine; and the Holy Ghost would not receive from a creature which was subject to the Father and the Son.