Hippolytus of Rome, Exegetical Fragments §17: From the Discourse of St. Hippolytus on the beginning of Isaiah

II.

Under Egypt he meant the world, and under things made with hands its idolatry, and under the shaking its subversion and dissolution. And the Lord, the Word, he represented as upon a light cloud, referring to that most pure tabernacle, in which setting up His throne, our Lord Jesus Christ came into the world to shake error.