Angels are jealous?

 Avos DeRav Nosson (12:06) Even the Holy Blessed One made peace in the heights, for He did not call ten angels Gabriel, ten angels Michael, ten angels Uriel, and ten angels Raphael, in the way humans do, calling ten people Reuben, ten people Shimon, ten people Levi, and ten people Judah. For if He had done as humans do, when He called one of them, they all would have come, and then become jealous of one another. So instead, He called only one angel Gabriel and one Michael, and when He calls any one of them, that angel comes before Him, and He dispatches the angel wherever He desires. And how do we know that they revere one another, and respect one another, and are humbler than human beings? Because when they open their mouths to sing a song, one of them says to the other: You should begin, for you are greater than I, and then the other one says: No, you should begin, for you are greater than I. This is not the way it is with human beings. Every person says to another: I am greater than you, and the other person responds: No, I am greater than you.