Answer:
Divine commandment does not make one god more good. The divine command will not be good by default, simply because it is spoken (or written) by a god. (Presumably the god of the bible.) God is not good by default for simply being himself. He would have to be shown to be good and not evil before you can even consider if the commandments given are good.
To preserve God's good status, you would first have to assume that he was even good in the first place. If you are considering the bible of the old testament, then clearly God should absolutely not be considered the shining example of good.