NET

13 In the middle of the living beings was something like burning coals of fire or like torches. It moved back and forth among the living beings. It was bright, and lightning was flashing out of the fire.

Darby

13 And as for the likeness of the living creatures, their appearance was like burning coals of fire, as the appearance of torches: it went up and down among the living creatures; and the fire was bright; and out of the fire went forth lightning.

KJV

13 As for the likeness of the living creatures, their appearance [was] like burning coals of fire, [and] like the appearance of lamps: it went up and down among the living creatures; and the fire was bright, and out of the fire went forth lightning.