John 16:15

(ut sup.) As if He said, Although the Spirit of truth proceeds from the Father, yet all things that the Father hath are Mine, and even the Spirit of the Father is Mine, and receiveth of Mine. But beware, when thou hearest this, that thou think not it is a thing or possession which the Father and the Son have. That which the Father hath according to His substance, i. e. His eternity, immutability, goodness, it is this which the Son hath also. Away with the cavils of logicians, who say, therefore the Father is the Son. Had He said indeed, All that God hath are Mine, impiety might have taken occasion to raise its head; but when He saith, All things that the Father hath are Mine, by using the name of the Father, He declareth Himself the Son, and being the Son, He usurpeth not the Paternity, though by the grace of adoption He is the Father of many saints.

But when He says, "He shall receive of mine, and shall show it unto you," listen thereto with Catholic ears, and receive it with Catholic minds. For not surely on that account, as certain heretics have imagined, is the Holy Spirit inferior to the Son; as if the Son received from the Father, and the Holy Spirit from the Son, in reference to certain gradations of natures. Far be it from us to believe this, or to say it, and from Christian hearts to think it. In fine, He Himself straightway solved the question, and explained why He said so. "All things that the Father hath are mine: therefore, said I, that He shall take of mine, and shall show it unto you." What would you more? The Holy Spirit thus receives of the Father, of whom the Son receives; for in this Trinity the Son is born of the Father, and from the Father the Holy Spirit proceedeth. He, however, who is born of none, and proceedeth from none, is the Father alone.

But in what sense it is that the only-begotten Son said, "All things that the Father hath are mine" (for it certainly was not in the same sense as when it was said to that son, who was not only begotten, but the elder of two, "Thou art ever with me; and all that I have is thine,") will have our careful consideration, if the Lord so will, in connection with the passage where the Only-begotten saith to the Father, "And all mine are Thine, and Thine are mine;" so that our present discourse may be here brought to a close, as the words that follow require a different opening for their discussion.

(Tr. c) But it is not true, as some heretics have thought, that because the Son receives from the Father, the Holy Ghost from the Son, as if by gradation, that therefore the Holy Ghost is inferior to the Son. He Himself solves this difficulty, and explains His own words: All things that the Father hath are Mine: therefore said I, that He shall take of Mine, and shall show it unto you.