Read ἐξουσία τῶν ἵππων the power of the horses.
Like unto serpents
“Long, smooth, subtle, clasping their victim in an embrace from which he cannot escape” (Milligan). As one of the innumerable fantasies of Apocalyptic exposition may be cited that of Elliott (“Horae Apocalypticae”) who finds a reference to the horse tails, the symbols of authority of the Turkish pashas.