Passage
On the third day, when it was morning, there were thunders and lightnings, and a thick cloud on the mountain, and the sound of an exceedingly loud trumpet; and all the people who were in the camp trembled.
On the third day, when it was morning, there were thunders and lightnings, and a thick cloud on the mountain, and the sound of an exceedingly loud trumpet; and all the people who were in the camp trembled.
Exodus 19:14 Moses went down from the mountain to the people, and sanctified the people; and they washed their clothes.
Exodus 19:15 He said to the people, “Be ready by the third day. Don’t have sexual relations with a woman.”
Exodus 19:16 On the third day, when it was morning, there were thunders and lightnings, and a thick cloud on the mountain, and the sound of an exceedingly loud trumpet; and all the people who were in the camp trembled.
Exodus 19:17 Moses led the people out of the camp to meet God; and they stood at the lower part of the mountain.
Exodus 19:18 All of Mount Sinai smoked, because Yahweh descended on it in fire; and its smoke ascended like the smoke of a furnace, and the whole mountain quaked greatly.
The verse centers on "light", "third", "morning", "thunders", "lightnings", "thick", "cloud", and "mountain". It is saying that the verse draws attention to "light" and "third", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 15's "He said to the people Be ready..." into verse 17's "Moses led the people out of the...", so "light" and "third" belong inside that flow. In Exodus context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "light" and "third" with trust shaped by these words, not by a vague optimism outside the passage.