Question was asked: “Why didn’t God simply forgive Satan after the Fall?”

Christian response,

Satan, in his pride and arrogance, never sought forgiveness nor did he repent but persuaded one-third of the angelic creation to follow him in a coup against God; this is why Earth was created and why Satan was extricated from the Kingdom and placed here to be dealt with within the Realm of Time partially constrained by physics as nothing impure is permitted to exist within the Kingdom of God (Rev 21:27). Jesus entered Time specifically to destroy the works of the Devil (1 John 3:8b).