Proof benevolent God doesn't set morals (Torah, doctrine, bible, point of view)

[KingNothing]

I would like for all Christians, Jews, and Muslims to keep this in mind when using the Bible/Torah/Quran as a basis for morality.

(1) Suppose God commands us to do what is right. Then either (a) the right actions are right because he commands them or (b) he commands them because they are right.
(2) If we take option (a), then God’s commands are, from a moral point of view, arbitrary; moreover, the doctrine of the goodness of God is rendered meaningless.
(3) If we take option (b), then we have admitted there is a standard of right and wrong that is independent of God’s will.
(4) Therefore, we must either regard God’s commands as arbitrary, and give up the doctrine of the goodness of God, or admit that there is a standard of right and wrong that is independent of his will, and give up the theological definitions of right and wrong.
(5) From a religious point of view, it is undesirable to regard God’s commands as arbitrary or to give up the doctrine of the goodness of God.
(6) Therefore, even from a religious point of view, a standard of right and wrong that is independent of God’s will must be accepted.

Taken from The Elements of Moral Philosophy, by James Rachels. 3rd Edition.

Rephrased in my own words:
Suppose God is good, murder is not good, and God says so. Then if murder is bad because God says so, God could just as easily have said it was good. But murder cannot be good. So then God must have said murder was bad because it is inherently so. Therefore morality can be found without consulting God.