'Coals' in the Bible

In the midst of the living beings there was something that looked like burning coals of fire, like torches darting back and forth among the living beings. The fire was bright, and lightning was flashing from the fire.

And He spoke to the man clothed in linen and said, “Enter between the whirling wheels under the cherubim and fill your hands with coals of fire from between the cherubim and scatter them over the city.” And he entered in my sight.

“Then set it empty on its coalsSo that it may be hotAnd its bronze may glowAnd its filthiness may be melted in it,Its rust consumed.