Passage
And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
Genesis 1:13 And the evening and the morning were the third day.
Genesis 1:14 And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:
Genesis 1:15 And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
Genesis 1:16 And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
Genesis 1:17 And God set them in the firmament of the heaven to give light upon the earth,
The verse centers on "light", "lights", "firmament", "heaven", "give", "upon", and "earth". It is saying that the verse draws attention to "light" and "lights", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 14's "And God said Let there be lights..." into verse 16's "And God made two great lights the...", so "light" and "lights" belong inside that flow. In Genesis context, the local focus is creation, human rebellion, covenant promise, and God's providence.
A plain takeaway is to answer the verse's own emphasis on "light" and "lights" with trust shaped by these words, not by a vague optimism outside the passage.