Reply Obj. 1: Dionysius in these words does not intend to exclude election from God absolutely; but only in a certain sense, in so far, that is, as He communicates His goodness not merely to certain things, but to all; and as election implies a certain distinction.
Reply Obj. 2: Because the essence of God is His intellect and will, from the fact of His acting by His essence, it follows that He acts after the mode of intellect and will.
Reply Obj. 3: Good is the object of the will. The words, therefore, "Because God is good, we exist," are true inasmuch as His goodness is the reason of His willing all other things, as said before (A. 2, ad 2).
Reply Obj. 4: Even in us the cause of one and the same effect is knowledge as directing it, whereby the form of the work is conceived, and will as commanding it, since the form as it is in the intellect only is not determined to exist or not to exist in the effect, except by the will. Hence, the speculative intellect has nothing to say to operation. But the power is cause, as executing the effect, since it denotes the immediate principle of operation. But in God all these things are one. _______________________
FIFTH ARTICLE [I, Q. 19, Art. 5]
Whether Any Cause Can Be Assigned to the Divine Will?
Objection 1: It seems that some cause can be assigned to the divine will. For Augustine says (Qq. lxxxiii, 46): "Who would venture to say that God made all things irrationally?" But to a voluntary agent, what is the reason of operating, is the cause of willing. Therefore the will of God has some cause.
Obj. 2: Further, in things made by one who wills to make them, and whose will is influenced by no cause, there can be no cause assigned except by the will of him who wills. But the will of God is the cause of all things, as has been already shown (A. 4). If, then, there is no cause of His will, we cannot seek in any natural things any cause, except the divine will alone. Thus all science would be in vain, since science seeks to assign causes to effects. This seems inadmissible, and therefore we must assign some cause to the divine will.
Obj. 3: Further, what is done by the willer, on account of no cause, depends simply on his will. If, therefore, the will of God has no cause, it follows that all things made depend simply on His will, and have no other cause. But this also is not admissible.
On the contrary, Augustine says (Qq. lxxxiii, 28): "Every efficient cause is greater than the thing effected." But nothing is greater than the will of God. We must not then seek for a cause of it.