Ezekiel 1:27-28

Now upward, from that which appeared to be His waist, I saw something like glowing metal that looked like it was filled with fire all around it; and downward, from that which appeared to be His waist, I saw something like fire; and there was a brightness and a remarkable radiance [like a halo] around Him. As the appearance of the rainbow in the clouds on a rainy day, so was the appearance of the surrounding radiance. This was the appearance of the likeness of the glory and brilliance of the LORD. And when I saw it, I fell face downward and I heard a voice of One speaking. [Rev 4:3]