Genesis 1:3-8

Then God said, “Let there be light,” and there was light. And God saw that the light was good. Then he separated the light from the darkness. God called the light “day” and the darkness “night.” And evening passed and morning came, marking the first day. Then God said, “Let there be a space between the waters, to separate the waters of the heavens from the waters of the earth.” And that is what happened. God made this space to separate the waters of the earth from the waters of the heavens. God called the space “sky.” And evening passed and morning came, marking the second day.