Imagine God promises you something, anything. Let's say... hair. He promises you hair because you are going bald and you’ve refused to eat for two days because of this. So he says, “Behold, my balding child!” In His earth-quaking voice, “I am going to give you hair, and fill up those bald spots! In fact, I’m going to give you a full head of hair; hair that’ll make Jon Snow weep!” 

What do you think is going to happen?