Genesis 1:14 (BSB)

And God said, “Let there be lights in the expanse of the sky to distinguish between the day and the night, and let them be signs to mark the seasons and days and years.

From Genesis 1. Also in the ESV.

Commentary on Genesis 1:14

• John Calvin (Reformed), Calvin's Commentaries on Genesis 1:14: 14. Let there be lights “Luminaria” — “Luminaries.” Hebrew מארות. Instruments of light, from אור, light, in verse 3. “Lighters; that is lightsome bodies, or instruments that show light.” — Ainsworth Moses passes onwards to the fourth day, on which the stars were made.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Genesis 1:14-19: This is the history of the fourth day's work, the creating of the sun, moon, and stars, which are here accounted for, not as they are in themselves and in their own nature, to satisfy the curious, but as they are in relation to this earth, to which they serve as lights; and this is enough to furnish us with matter for praise and thanksgiving.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Genesis 1:14: And God said, let there be lights in the firmament of the heaven,.... In the upper part of it, commonly called the starry heaven: some writers, both Jewish and Christian, and even modern astronomers, understand this only of the appearance of them, and not of the formation of them; they suppose they were made on the first day, but did not appear or shine out...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Genesis 1:14-19: FOURTH DAY. (Gen 1:14-19) let there be lights in the firmament--The atmosphere being completely purified, the sun, moon, and stars were for the first time unveiled in all their glory in the cloudless sky; and they are described as "in the firmament" which to the eye they appear to be, though we know they are really at vast distances from it.