You are the source of all life, and because of your light we see the light.” (Psalm 36:9, GNB)

Written by David, servant of Yahweh, to Yahweh himself.

David understands that life comes from Yahweh.  We didn’t come about from the impersonal plus time plus chance, nor did we come from outside the solar system, descendants of aliens from afar.  God is the source and originator of all life, not some life, not mankind only, but of all life that we see.

From this fact proceeds David’s amazing follow on comment: because of your light we see the light.  Notice that we do not have the light within ourselves.  Yahweh is the source of light, even as he is the source of everything else in the universe.  If we did not have light from God, we would not be able to see at all because we cannot create, nor can we control the properties of light.  However, since God illumined the world through light, we are able to see light.

I presume that David here means not only physical light, but also metaphysical light, or light as knowledge of the world and of nature that surrounds us and operates according to certain natural laws [where did natural law come from?  From the same person who created the universe in which they operate]. Spurgeon comments here:

The Lord alone can give natural, intellectual, and spiritual life; he alone can make life bright and lustrous. In spiritual things the knowledge of God sheds a light on all other subjects. We need no candle to see the sun, we see it by its own radiance, and then see everything else by the same lustre.

To sum this verse up, we owe not only our existence, but our ability to look at and understand the world around us all to our Lord.  Without his creative power and will we would neither exist, nor be able to comprehend our world, and worst of all we would be unable to worship the One who is the highest being and greatest good in the universe…and beyond.