Light

The Very first thing God created was light,and He deemed it good.

Genisis 1 :

1In the beginning God created the heavens and the earth. 2The earth was formless and void, and darkness was over the surface of the deep, and the Spirit of God was moving over the surface of the waters.
3Then God said, "Let there be light"; and there was light.
4God saw that the light was good; and God separated the light from the darkness.
5God called the light day, and the darkness He called night And there was evening and there was morning, one day.
6Then God said, "Let there be an expanse in the midst of the waters, and let it separate the waters from the waters."
7God made the expanse, and separated the waters which were below the expanse from the waters which were above the expanse; and it was so.
8God called the expanse heaven. And there was evening and there was morning, a second day.