Exodus 19:18-20

LITV(i) 18 And the mountain of Sinai was smoking, all of it, because Jehovah came down on it in fire. And its smoke went up like the smoke of a furnace; and the mountain quaked exceedingly. 19 And it happened while the sound of the ram's horn was sounding, and becoming very strong, Moses spoke. And God answered him by a voice. 20 And Jehovah came down on the mountain of Sinai, to the top of the mountain; and Jehovah called Moses to the top of the mountain, and Moses went up.