Question about the discussion of ‘Balma disputes’

peace.
I wanted to ask based on your claim in the discussion of ‘The Alma Controversies’ that without a transcendental factor there is no valid source for determining between good and evil and there is no reason whatsoever to act according to ethical facts. I wanted to ask, even if God does indeed give validity to morality, how does He ‘transmit’ to man the knowledge to act in the proper moral way?
Thank you, good evening.