Did God separate light and darkness on the first or the fourth day?
GEN 1:3, And God said, Let there be light: and there was light. 4 And God saw the light, that it was good: and God DIVIDED THE LIGHT FROM THE DARKNESS. 5 And God called the light Day, and the darkness he called Night. And the evening and the morning were THE FIRST DAY.
GEN 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. 17 And God set them in the firmament of the heaven to give light upon the earth, 18 And to rule over the day and over the night, and TO DIVIDE THE LIGHT FROM THE DARKNESS: and God saw that it was good. 19 And the evening and the morning were THE FOURTH DAY.