You’ve avoided the horn of the dilemma which says that what is good is so because it is commanded by God since that would imply that God could have made anything including rape, or stealing, or dishonoring your father or mother a good thing if he had wanted to.
Now, we are looking at what is good
for us (not for God), and whether what is good for us (i.e. what fulfills our nature) can have some conflict (at least sometimes) with the commands of God.
Now, everything I’ve said here (i.e. about Transcendental Evil, Natural Evil, and Moral Evil … and about God’s power with respect to those) are things that can be concluded from natural reason. One thing of note that I mentioned is that God is capable of Natural Evil, i.e. it’s within God’s omnipotence to withdraw fulfillment from a thing’s nature, since it does not conflict with the principle of non-contradiction (for it is possible that a thing’s nature be not fulfilled … right?). Hence, it would seem to follow, through natural reason, that God could do something to a human so as to move him farther away from human fulfillment. One thing, presumably, would be to
command the human to do something that would move him farther from his fulfillment. And if that is the case, then the conclusion would be that
God is capable of commanding a moral evil. But once again, this would be immoral for humans (to follow it),
not for God (to command it), since God is by nature fulfilled and unchangeably so.
Now one may ask, “Wouldn’t it be evil
for God to command something that would be evil
for humans (i.e. that would bring humans farther from fulfillment)?” If yes, then such an action of God would be in conflict with God’s nature (by definition, because it would be evil for God). Now, for changeable things, such as a human, acting against one’s human nature (in some things) is very possible, for humans can vary in being (and in particular, fulfillment). However, God cannot vary in being by definition (for He is all being), and hence an action of God in conflict with His nature would lead to a contradiction … and thus God cannot act against His nature. And so, if commanding a human to do a moral evil is against God’s nature, then
God cannot command a human to do a moral evil.
But why would it be against God’s nature to command a human to do a moral evil? From what can be gathered from natural reason, it would seem that He very much
could … for God owes us absolutely nothing. Just as He created everything, He can take things away. There is nothing against His nature, so far as the clear-thinking pagan can tell, that God can even command us to do something that would be evil for us in the worst possible way. The honest pagan would say that God completely has the right and ability to do such a thing.
According to natural reason alone, therefore, God can command us to do a moral evil.
However, the Catholic Church claims that divine revelation gives us an insight into God’s nature that is not available to natural reason alone. This particular truth about God’s nature only made possible by divine revelation is that
God desires our fulfillment … desires our happiness. This is … somewhat out of the ordinary because it is a completely selfless love. God gains nothing from our fulfillment since He is unchangeable and fully fulfilled already. Revelation also assures us that God
is this Divine Love, and it would be contradictory for God to act against it … for it would be acting against Himself. Surely, then, commanding us to do something that is counter-productive to our fulfillment would not be in accordance with this attribute. Hence, *according to the further insights into God’s nature provided by divine revelation, God will always act toward the fulfillment of human nature *(and hence will never command us to do a moral evil).
Now there’s a few more things that can be said. But I’m going to halt here for now, since most of you have probably stopped reading …
