Ezekiel 1:12-14

Young's Literal Translation

¹² And each straight forward they go, whither the spirit is to go, they go, they turn not round in their going.

¹³ As to the likeness of the living creatures, their appearances [are] as coals of fire -- burning as the appearance of lamps; it is going up and down between the living creatures, and brightness [is] to the fire, and out of the fire is going forth lightning.

¹⁴ And the living creatures are running, and turning back, as the appearance of the flash.