God had a plan, and he carried it out step by step. In the darkness and emptiness, God's spirit began to move and work. And there was light. When God saw the light He said it was good. He called the light day and the darkness night.
Night follows day, and day follows night.
In both, we remember God. We mark time by these changes. That was the first day. God separated the upper and lower waters, making the beautiful blue sky and putting clouds in it. Like the light, God said it was good.