14 I have made good what I promised; I have established my propositions with, as I think, the strongest proofs and testimonies. Hold fast then what you have heard. I will recapitulate it briefly, and entrust it to be stored up in your minds as a thing, to my thinking, of the greatest usefulness. The Father was not born of the Virgin; yet this birth of the Son from the Virgin was the work both of the Father and the Son. The Father suffered not on the Cross; yet the Passion of the Son was the work both of the Father and the Son.
The Father rose not again from the dead; yet the resurrection of the Son was the work both of the Father and the Son. You see then a distinction of Persons, and an inseparableness of operation. Let us not say therefore that the Father does any thing without the Son, or the Son any thing without the Father. But perhaps you have a difficulty as to the miracles which Jesus did, lest perhaps He did some which the Father did not! Where then is that saying, “The Father who dwells in Me, He does the works?” All that I have now said was plain; it needed to be barely mentioned; there was no necessity for much labour to make it understood, but only that care should be taken, that it might be brought to your remembrance.
Source: Sermons on Selected Lessons of the New Testament (New Advent)