Mount Sinai, the whole of it, smoked, because the LORD descended on it in fire; and its smoke ascended like the smoke of a furnace, and the whole mountain quaked greatly.
The angel of the LORD appeared to him in a flame of fire out of the midst of a bush. He looked, and behold, the bush burned with fire, and the bush was not consumed.
I saw as it were glowing metal, as the appearance of fire within it round about, from the appearance of his waist and upward; and from the appearance of his waist and downward I saw as it were the appearance of fire, and there was brightness round about him.
As the appearance of the bow that is in the cloud in the day of rain, so was the appearance of the brightness round about. This was the appearance of the likeness of the glory of the LORD. When I saw it, I fell on my face, and I heard a voice of one that spoke.
Who can stand before his indignation? Who can endure the fierceness of his anger? His wrath is poured out like fire, and the rocks are broken apart by him.
Out of heaven he made you to hear his voice, that he might instruct you: and on earth he made you to see his great fire; and you heard his words out of the midst of the fire.
Know therefore this day, that the LORD your God is he who goes over before you as a devouring fire; he will destroy them, and he will bring them down before you: so shall you drive them out, and make them to perish quickly, as the LORD has spoken to you.