To prevent beings of equal power from entering the world again following the first demon war the God's set a Providence that blocks God's from entering the mortal realm. They also sealed away the highest ranking beingsthe Primordial God's or the first ones formed. Every God formed from the world was as powerful as the law of the world they represented, with each generation of God's the laws they representing became weaker and weaker. After some of the formed God's died in the first demon war, because when they died the law of the world they represented stopped existing. the Primordial God's were sealed away as they represented the most powerful laws of the world and if they died the world would end as well.