Genesis 1:3

And God said, Let there be light: and there was light.

1. God is responsible for the light on the earth.
2. God has the ability to speak.
3. God uses commands as the means to make things happen.
4. Other things or beings fulfill God's commands, presumably out of either fear or love.
5. Since light on the earth originates primarily from the sun, this must refer to something like the creation of the sun, the positioning of the earth in orbit around the sun, and/or a clearing up of the earth's atmosphere so light could reach the surface of the earth.