On Tralfamadore, says Billy Pilgrim, there isn't much interest in Jesus Christ. The Earthling figure who is most engaging to the Tralfamadorian mind, he says, is Charles Darwin - who taught that those who die are meant to die, that corpses are improvements. So it goes.
Listen: Billy Pilgrim has come unstuck in time.
Among the things Billy Pilgrim could not change were the past, the present, and the future.