A Better Catholic

And God said, "Let there be lights in the expanse of the sky to separate the day from the night,
and let them serve as signs to mark seasons and days and years,
and let them be lights in the expanse of the sky to give light on the earth."

And it was so. God made two great lights - the greater light to govern the day and
the lesser light to govern the night. He also made the stars.
God set them in the expanse of the sky to give light on the earth,
to govern the day and the night, and to separate light from darkness.
And God saw that it was good.

And there was evening, and there was morning - the fourth day.

Haven't you thought that God created light on the first day of creation?  Yes he did but these are specific lights.  What he did on the fourth day is to separate the day from the night.  He gave us something specific to mark the days with, to help us keep track of the days, years and seasons.

Can you imagine a world where we didn’t have any darkness?  And a total darkness?  And because of this he made the moon and the stars for the night.

God was very good indeed!