Now Mount Sinai was completely covered in smoke because the Lord had descended upon it in fire, and the smoke ascended like the smoke of a furnace, and the whole mountain shook violently.
The angel of the Lord appeared to him in a flame of fire from the midst of a bush. He looked, and behold, the bush was burning, yet it was not consumed.
Then I saw as glowing metal, as the appearance of fire all around within it, from the appearance of His loins and upward; and from the appearance of His loins and downward I saw as it were the appearance of fire, and there was a brightness around Him.
As the appearance of the rainbow that is in the cloud on a day of rain, so was the appearance of the brightness all around. This 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 of one speaking.
Out of heaven He let you hear His voice so that He might instruct you, and on earth He showed you His great fire, and you heard His words out of the midst of the fire.
Understand therefore today that the Lord your God is He who goes over before you as a consuming fire. He shall destroy them and shall bring them down before you, so that you drive them out and destroy them quickly, as the Lord has spoken to you.