And Jacob returned to gather the stones, and he found them all (turned into) one stone, and he set || it up for a pillar in the midst of the place, and oil descended for him from heaven, and he poured it thereon, as it is said, "And he poured oil upon the top of it" (Gen. 28:18). What did the Holy One, blessed be He, do? He placed (thereon) His right foot, and sank the stone to the bottom of the depths, and He made it the keystone of the earth, just like a man who sets a keystone in an arch; therefore it is called the foundation stone, for there is the navel of the earth, and therefrom was all the earth evolved, and upon it the Sanctuary of God stands, as it is said, "And this stone, which I have set up for a pillar, shall be God's house" (Gen. 28:22).