'Radiance' in the Bible

Then I noticed from the appearance of His loins and upward something like glowing metal that looked like fire all around within it, and from the appearance of His loins and downward I saw something like fire; and there was a radiance around Him.

As the appearance of the rainbow in the clouds on a rainy day, so was the appearance of the surrounding radiance. Such was the appearance of the likeness of the glory of the Lord. And when I saw it, I fell on my face and heard a voice speaking.