Midrasch zu Zechariah 9:16

Rabbi Ishmael said: All the bodies crumble into the dust of the earth, until nothing remains of the body except a spoonful of earthy matter. In the future life, when the Holy One, blessed be He, calls to the earth to return all the bodies deposited with it, that which had become mixed with the dust of the earth, like the yeast which is mixed with the dough, improves and increases, and it raises up all the body. When the Holy One, blessed be He, calls to the earth to return all the bodies deposited with it, that which has become mixed with the dust of the earth, improves and increases and raises up all the body without water. Forthwith the earth quakes and the mountains tremble, and the graves are opened, and the stones of the graves are scattered about one from the other, as it is said, "And the Lord God shall save them || in that day as the flock of his people: for they shall be as the stones of a crown, lifted on high over his land" (Zech. 9:16).