Midrash su Giobbe 39:18

Sammael was the great prince in heaven; the Chajjôth had four wings and the Seraphim had six wings, and Sammael had twelve wings. What did Sammael do? He took his band and descended and saw all the creatures which the Holy One, blessed be He, had created in His world and he found among them none so skilled to do evil as the serpent, as it is said, "Now the serpent was more subtil than any beast of the field" (Gen. 3:1). Its appearance was something like that of the camel, and he mounted and rode upon it. The Torah began to cry aloud, saying, Why, O Sammael! now that the world is created, is it the time to rebel against the Omnipresent? Is it like a time when thou shouldst lift up thyself on high? The Lord of the world "will laugh at the horse and its rider" (Job 39:18).