Ezekiel 10:9-12

9And when I looked, there were four wheels by the cherubim, one wheel by one cherub and another wheel by each other cherub; the wheels appeared to have the color of a beryl stone.

10As for their appearance, all four looked alike—as it were, a wheel in the middle of a wheel.

11When they went, they went toward any of their four directions; they did not turn aside when they went, but followed in the direction the head was facing. They did not turn aside when they went.

12And their whole body, with their back, their hands, their wings, and the wheels that the four had, were full of eyes all around.