Indeed... the most immoral human on earth?Think about what you just said.
Imagine you are God, you send a messanger, to tell a select few, that people must follow him, or face an eternity of torture in a lake of fire. Your messanger refuses to provide any future civilizations evidence of his existence, other than word of mouth.
Many of these non- believers will one day come to you, who have led full, moral lives. You are then going to say, sorry, I know I left no address to come find me, nor one little shred of evidence of my existence. I know you were a good person, better than alot of my followers, but, too bad for you, you get what you don't deserve. Bye.
How is any of this story a moral represention of how you, me, or society, would treat someone, simply because they don't know you or I exist?
Thankfully, because of no evidence, I need not worry about this extremely evil, immoral character you call, God.
Is still morally superior to the christian god.
By simple fact that humans are limited to human-level activities, if nothing else.