And thank God for that

This is one pointy horn of the Euthyphro Dilemma - if 'what is good' is defined as, 'what God is, says, does, or tells you to do', then it becomes autocratic and arbitrary; by substitution, '
what God is, says, does, or tells you to do is good' becomes simply, '
what God is, says, does, or tells you to do is what God is, says, does, or tells you to do'; 'good' sublimes away... and if God has the prerogative to do things that man is not allowed to do, there's a double standard of 'good', as in, "
do as I say, not as I do"; and if good is defined that way, it may also be contradictory to our own inner moral compass, which is likely to be problematic. Other than that, it's fine