Charles H. Spurgeon on Psalms 68:33

To him that rideth upon the heavens of heavens. He who manages the heavens, directing their course and influence. He formed every orb, ascertained its motion, proportioned its solid contents to the orbit in which it was to revolve, and to the other bodies of the same system; and as an able rider manages his horse, so does God the sun, moon, planets, and all the host of heaven. W. Greenfield, in Comprehensive Bible.