As far as I'm concerned, as soon as he explains precisely why God's representative on Earth can't get his boss to do anything, or else he gives up that accolade, that's the day his authority gets promoted to that of any random stranger on the street. At the moment his job allows him to carry tea and no tea at the same time.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'