Cain has made a mountain of corpses. His Caliphate was built on bones. His code is cruelty and his holy book is written in blood on the flayed skins of his murdered victims
After Cain killed his brother, the Lord told him, "A fugitive and a wanderer shalt thou be in the earth."
But the natural order has been reversed, instead the Abels, if they survive, become homeless wanderers and the Cains build their Caliphates on the tombs of their victims.