God came from Teman, and the Holy One from mount Paran. Selah. His glory covered the heavens, and the earth was full of his praise. And his brightness was as the light; he had bright beams coming out of his side: and there was the hiding of his power. Before him went the pestilence, and burning coals went forth at his feet. He stood, and measured the earth: he beheld, and drove asunder the nations;
Exodus 19:16-18
And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled. And Moses brought forth the people out of the camp to meet with God; and they stood at the nether part of the mount. And mount Sinai was altogether on a smoke, because the LORD descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly.
Habakkuk's theophanic prayer-vision is a rich meditation on the Exodus 19 Sinai theophany as the constitutional paradigm of divine intervention. The brightness, fire, pestilence before him, and the earth shaking correspond to the Sinai features: thunders, lightnings, fire, smoke, and the mountain quaking. Habakkuk's vision draws on the Sinai theophany as the constitutional model for divine action in history — the same God who appeared at Sinai will appear again in sovereign intervention against Babylon, executing the same theophanic judgment the covenant people witnessed at the original covenant-founding moment.