For nothing is due to anyone, except on account of something already given him gratuitously by God. In this way the divine omnipotence is particularly made manifest, because to it pertains the first foundation of all good things.
Reply to Objection 4: The absolute possible is not so called in reference either to higher causes, or to inferior causes, but in reference to itself. But the possible in reference to some power is named possible in reference to its proximate cause. Hence those things which it belongs to God alone to do immediately---as, for example, to create, to justify, and the like---are said to be possible in reference to a higher cause. Those things, however, which are of such kind as to be done by inferior causes are said to be possible in reference to those inferior causes. For it is according to the condition of the proximate cause that the effect has contingency or necessity, as was shown above ( Question [14], Article [1], ad 2). Thus is it that the wisdom of the world is deemed foolish, because what is impossible to nature, it judges to be impossible to God. So it is clear that the omnipotence of God does not take away from things their impossibility and necessity.
Whether God can make the past not to have been?
Objection 1: It seems that God can make the past not to have been. For what is impossible in itself is much more impossible than that which is only impossible accidentally. But God can do what is impossible in itself, as to give sight to the blind, or to raise the dead. Therefore, and much more can He do what is only impossible accidentally. Now for the past not to have been is impossible accidentally: thus for Socrates not to be running is accidentally impossible, from the fact that his running is a thing of the past. Therefore God can make the past not to have been.
Objection 2: Further, what God could do, He can do now, since His power is not lessened. But God could have effected, before Socrates ran, that he should not run. Therefore, when he has run, God could effect that he did not run.
Objection 3: Further, charity is a more excellent virtue than virginity. But God can supply charity that is lost; therefore also lost virginity. Therefore He can so effect that what was corrupt should not have been corrupt.
On the contrary, Jerome says (Ep. 22 ad Eustoch.): "Although God can do all things, He cannot make a thing that is corrupt not to have been corrupted." Therefore, for the same reason, He cannot effect that anything else which is past should not have been.
I answer that, As was said above ( Question [7], Article [2]), there does not fall under the scope of God's omnipotence anything that implies a contradiction. Now that the past should not have been implies a contradiction. For as it implies a contradiction to say that Socrates is sitting, and is not sitting, so does it to say that he sat, and did not sit. But to say that he did sit is to say that it happened in the past. To say that he did not sit, is to say that it did not happen. Whence, that the past should not have been, does not come under the scope of divine power. This is what Augustine means when he says (Contra Faust. xxix, 5): "Whosoever says, If God is almighty, let Him make what is done as if it were not done, does not see that this is to say: If God is almighty let Him effect that what is true, by the very fact that it is true, be false": and the Philosopher says (Ethic. vi, 2): "Of this one thing alone is God deprived---namely, to make undone the things that have been done."
Reply to Objection 1: Although it is impossible accidentally for the past not to have been, if one considers the past thing itself, as, for instance, the running of Socrates; nevertheless, if the past thing is considered as past, that it should not have been is impossible, not only in itself, but absolutely since it implies a contradiction. Thus, it is more impossible than the raising of the dead; in which there is nothing contradictory, because this is reckoned impossible in reference to some power, that is to say, some natural power; for such impossible things do come beneath the scope of divine power.
Reply to Objection 2: As God, in accordance with the perfection of the divine power, can do all things, and yet some things are not subject to His power, because they fall short of being possible; so, also, if we regard the immutability of the divine power, whatever God could do, He can do now. Some things, however, at one time were in the nature of possibility, whilst they were yet to be done, which now fall short of the nature of possibility, when they have been done. So is God said not to be able to do them, because they themselves cannot be done.
Reply to Objection 3: God can remove all corruption of the mind and body from a woman who has fallen; but the fact that she had been corrupt cannot be removed from her; as also is it impossible that the fact of having sinned or having lost charity thereby can be removed from the sinner.
Whether God can do what He does not?
Objection 1: It seems that God cannot do other than what He does. For God cannot do what He has not foreknown and pre-ordained that He would do. But He neither foreknew nor pre-ordained that He would do anything except what He does. Therefore He cannot do except what He does.
Objection 2: Further, God can only do what ought to be done and what is right to be done. But God is not bound to do what He does not; nor is it right that He should do what He does not. Therefore He cannot do except what He does.
Objection 3: Further, God cannot do anything that is not good and befitting creation. But it is not good for creatures nor befitting them to be otherwise than as they are. Therefore God cannot do except what He does.
On the contrary, It is said: "Thinkest thou that I cannot ask My Father, and He will give Me presently more than twelve legions of angels?" (Mt. 26:53). But He neither asked for them, nor did His Father show them to refute the Jews. Therefore God can do what He does not.
I answer that, In this matter certain persons erred in two ways. Some laid it down that God acts from natural necessity in such way that as from the action of nature nothing else can happen beyond what actually takes place---as, for instance, from the seed of man, a man must come, and from that of an olive, an olive; so from the divine operation there could not result other things, nor another order of things, than that which now is. But we showed above ( Question [19], Article [3]) that God does not act from natural necessity, but that His will is the cause of all things; nor is that will naturally and from any necessity determined to those things. Whence in no way at all is the present course of events produced by God from any necessity, so that other things could not happen. Others, however, said that the divine power is restricted to this present course of events through the order of the divine wisdom and justice without which God does nothing. But since the power of God, which is His essence, is nothing else but His wisdom, it can indeed be fittingly said that there is nothing in the divine power which is not in the order of the divine wisdom; for the divine wisdom includes the whole potency of the divine power. Yet the order placed in creation by divine wisdom, in which order the notion of His justice consists, as said above ( Question [21], Article [2]), is not so adequate to the divine wisdom that the divine wisdom should be restricted to this present order of things. Now it is clear that the whole idea of order which a wise man puts into things made by him is taken from their end. So, when the end is proportionate to the things made for that end, the wisdom of the maker is restricted to some definite order. But the divine goodness
