Morality from God? Or obedience to God from morality.

Greetings to the rabbi.
One person made the following claim to me:
It is usually claimed that the validity of moral intuition comes from an objective God who created them, and in any case, this is not just a non-binding feeling, but rather about good and evil.
But what? Our duty to obey God as the source of the best from nothing also stems, if not from our moral intuition, and in any case, to project the validity of morality onto something whose validity is valid only because of morality itself is a failure.
What does the rabbi think about this claim? Is he right or wrong and why?
Thank you very much.