“their appearance was like burning coals of fire.” This description is confusing, and we are confronted with the fact that describing God’s chariot-throne which was glorious in the extreme, is exceedingly difficult. This would be one occasion when we could genuinely say, “a picture is worth a thousand words,” but even a photo would likely not capture the greatness of this vision, a video would do much better.
“The fire moved back and forth.” The Hebrew text simply has “it” moved, but that is unclear in English, so most versions nuance this in some way for clarity.