“Each at his banner,” that is what is written: “You are beautiful, my love, like Tirtza” (Song of Songs 6:4); as I accede [mitratze] to you. Alternatively, “like Tirtza,” you accede to Me. Alternatively, “like Tirtza,” that you gain acceptance through offerings, as it is stated: “So that it will be accepted [venirtza] for him, to atone for him” (Leviticus 1:4). “Lovely like Jerusalem” (Song of Songs 6:4), like those groups of ministering angels that fear Me and are wholly devoted to Me. “Formidable like banners” (Song of Songs 6:4); in what way are you like banners? With the banners that I gave you. David sees and says: “He did not do so to every nation” (Psalms 147:20), but rather to His people; that is what is written: “Each at his banner….”
Angels Attend to David
Bamidbar Rabbah 2:5