cherub - angelic agents (compare Gen 3:24), the figures of which were placed over the ark (1Sa 4:4), representing God’s dwelling; used here to enhance the majesty of the divine advent. Angels and winds may represent all rational and irrational agencies of God’s providence (compare Psa 104:3, Psa 104:4).
did fly - Rapidity of motion adds to the grandeur of the scene.