In “The Essence of the Wisdom of Kabbalah,” Baal HaSulam explains that the worlds ABYA are all very similar to one another: “Kabbalists have found that the form of the four worlds, named Atzilut, Beria, Yetzira, and Assiya, beginning with the first, highest world, called Atzilut, and ending in this corporeal, tangible world, called Assiya, is exactly the same... This means that everything that eventuates and occurs in the first world is found unchanged in the next world, below it, too. It is likewise in all the worlds that follow it, down to this tangible world...