Musar do Hioba 25:2

Peace is such a valuable commodity that the Sages comment in Midrash Bamidbar Rabbah (11:7) that no vessel is more capable of holding blessing than peace. They note that for this reason the priestly blessing ends with the words, “And He will grant you peace” (Bamidbar 6:26). Similarly, we are told that the Holy One Himself, “makes peace On High” (Iyov 25:2), that is, among the angels. And if peace is needed among the angels, who have no evil inclination and who are free of jealousy and hatred, how much more is it needed between man and his neighbor, between the minority and majority, whom the Satan is perpetually goading into discord and quarreling.