And I at once bade another demon to be led unto me; and instantly there approached me the demon Asmodeus, bound, and I asked him: "Who art thou?" But he shot on me a glance of anger and rage, and said: "And who art thou?" And I said to him: "Thus punished as thou art, answerest thou me?" But he, with rage, said to me: "But how shall I answer thee, for thou art a son of man; whereas I was born an angel's seed by a daughter of man, so that no word of our heavenly kind addressed to the earth-born can be overweening. Wherefore also my star is bright in heaven, and men call it, some the Wain, and some the dragon's child. I keep near unto this star. So ask me not many things; for thy kingdom also after a little time is to be disrupted, and thy glory is but for a season. And short will be thy tyranny over us; and then we shall again have free range over mankind, so as that they shall revere us as if we were gods, not knowing, men that they are, the names of the angels set over us."
That's telling him, Asmodeus.