the great lights of the universe and the expanse of the sky

The great lights of the universe and of the expanse of the sky speak of His Revelation

And God said, Let there be light: and there was light.
And God saw the light, that it was good: and God divided
the light from the darkness.
And God called the light Day, and the darkness he called Night.
And the evening and the morning were the first day.
Gen 1:3-5 KJV

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:
And let them be for lights in the firmament of the heaven
to give light upon the earth: and it was so.
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.
Gen 1:14-16 KJV

By day the Lord went ahead of them in a pillar of cloud to guide them on their way and by night in a pillar of fire to give them light,
so that they could travel by day or night.
Ex 13:21 NIV

I saw that wisdom is better than folly,
just as light is better than darkness.

Eccl 2:13 NIV