John Trapp on Ezekiel 1:16

Ver. 16. The appearance of the wheeles—was like unto the colour of a Beryll] Heb. as the eye or colour of Tarſhiſh, i. e. the ſea or Beryl which is of a ſea-colour, even ſea-green: whereby is repreſented the flux and fluctuating conſtitution of things here below.

And they four had one likeneſſe] There is the ſame inſtability of things in one place as in another, and the ſame over-ruling providence.

Their appearance and their work were as it were a wheel in the midſt of a wheel] God hath a wheel (Providence) in all the wheeling buſineſſes of the world. Theſe are ſo one within another, as that all their motion dependeth on the Angels, whom he alſo moderateth, and ordereth at his own pleaſure.Dr. Preſt. Whenſoever therefore we ſee ſuch things come to paſſe that we can ſee no reaſon for (as the Churches overthrown, the wicked exalted, &c.) conſider that one wheel is within another, and the wings of the Angels are one within another, &c.