John 5:21

(de Trin. vii. c. 19) For to will is the free power of a nature, which by the act of choice, resteth in the blessedness of perfect excellence.

"For as the Father raiseth up the dead, and quickeneth them, even so the Son quickeneth whom He will." Yet "can do nothing of Himself" is opposed to "whom He will": since if He quickeneth "whom He will," He can do something "of Himself," (for to "will" implies power,) but if He "can do nothing of Himself," then He cannot "quicken whom He will." For the expression, "as the Father raiseth up," showeth unvarying resemblance in Power, and "whom He will," Equality of Authority. Seest thou therefore that "cannot do anything of Himself" is the expression of One not taking away His (own) authority, but declaring the unvarying resemblance of His Power and Will (to those of the Father)?

In this sense also understand the words, "shall show to Him"; for in another place He saith, "I will raise him up at the last Day." (c. vi. 40.) And again, to show that He doth it not by receiving an inward power from above, He saith, "I am the Resurrection and the Life." (c. xi. 25.) Then that thou mayest not assert that He raiseth what dead He will and quickeneth them, but that He doth not other things in such manner, He anticipateth and preventeth every objection of the kind by saying, "What things soever He doeth, these also doeth the Son likewise," thus declaring that He doeth all things which the Father doeth, and as the Father doeth them; whether thou speakest of the raising of the dead, or the fashioning of bodies, or the remission of sins, or any other matter whatever, He worketh in like manner to Him who begat Him.

"And greater works than these will He show Him, that ye may marvel." Here again we are embarrassed. And who is there that may worthily investigate this so great a secret? But now, in that He has deigned to speak to us, Himself opens it. For He would not speak what He would not have us understand; and as He has deigned to speak, without doubt He has excited attention: for does He forsake any whom He has roused to give attentive hearing? We have said that it is not in a temporal sense that the Son knoweth,-that the knowledge of the Son is not one thing, and the Son Himself another; nor one thing His seeing, Himself another; but that the seeing itself is the Son, and the knowledge as well as the wisdom of the Father is the Son; and that that wisdom and seeing is eternal and co-eternal with Him from whom it is; that it is not something that varies by time, nor something produced that was not in being, nor something that vanishes away which did exist.

"As the Father raiseth the dead, and quickeneth them, so also the Son quickeneth whom He will." Clearly these are greater. Very much greater is it that a dead man should rise, than that a sick man should recover: these are greater. But when is the Father about to show these to the Son? Does the Son not know them? And He who was speaking, did He not know how to raise the dead? Had He yet to learn how to raise the dead to life-He, I say, by whom all things were made? He who caused that we should live, when we were not in being, had He yet to learn how we might be raised to life again? What, then, do His words mean?