What is Salieri's "vision of God" in the play, Amadeus?

Salieri presents the audience with his subjective vision of God as "an old candle-smoked God in a mulberry robe, staring at the world with dealer's eyes.. . Those eyes made bargains, real and irreversible." God becomes Salieri's "cunning Enemy," whom he continually tries to block. Salieri's God is unjust, as when he notes:

You gave me the desire to serve You-winch most men do not have-then saw to It the service was shameful In the ears of the server You gave me the desire to praise YOU-Which most men do not feel-then made me mute. You put into me perception of the Incomparable-which most men never know!-then ensured that I would know myself forever mediocre.