God Himself was the light for the first three days of Creation, just as He will be in the new heavens and new earth, “There will be no more night. They will not need the light of a lamp or the light of the sun, for the Lord God will give them light. And they will reign for ever and ever” (Revelation 22:5). Until He created the sun, moon, and stars, God miraculously provided light during the “day” and may have done so during the “night” as well (Genesis 1:14). read more
1:16 God made the two great lights, the greater light to dominate the day and the lesser light to dominate the night, and the stars. 1:17 And God set them in the expanse of the sky to shine upon the earth, 1:18 to dominate the day and the night, and to separate light from darkness. read more
And God said, Let there be light: and there was light.
And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.
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.