Obviously this is a work (or thought) in progress...
Instead of Jesus being the one to come over to where I'm sitting (hey, I have to be literal in my thinking here...it's hard to imagine being a being of light, or even an angel) and asking me what sins I choose to commit while in my body on earth...maybe that task was given to Satan as the head cherub.

Maybe that's where Satan went amiss. As the two of us would gaze upon Jesus hanging on the Cross in heaven watching the consequences of each of my sins, Satan started thinking like Aaron and Miriam. "Who does Jesus think he is? Don't I have as much authority here?"
Maybe he envied the ties between the Father, Son and Holy Spirit.
Well, the 5 "I will" statements of Isaiah 14 give us a close-up view of Satan's mind during this time.