And [as for] their appearances, they four had one likeness,.... They were exactly like one another; they were all composed of the same matter, had all the colour of a beryl stone, were all in the same form of a wheel; and in matter, form, and shape, entirely tallied and agreed one with another, as true Gospel churches do:
as if a wheel had been in the midst of a wheel: not included in one another, but were formed in a cross or transverse way;