satan was cast from Paradise, never to return, because of his sin of pride but most of humanity never paid attention to this lesson and are too proud to worship Allah 39:59-61
39:59 'Indeed, My verses did come to you, but you belied them. You were proud and became one of the unbelievers.'
39:60 On the Day of Resurrection, you shall see those who lied about Allah with blackened faces. In Gehenna is there not a lodging for those who were proud?