John Trapp on Psalms 36:9

Verſ. 9. For with thee is the fountain of life] Vena vita, verae vitae ſcaturigo. A fountain communicateth its water, and yet is not exhauſted. Fontium perennitas, is one of the wonders in nature; what ſhall we ſay of this divine fountain of life, temporall, ſpirituall, and eternall, over-flowing and ever-flowing?

In thy light ſhall we ſee light] viz. Of knowledge, and comfort; what's the air without light? or any thing elſe without God? Abſ que Deo omnis copia eſt egeſtas, ſaith Bernard. In the former compariſon, with thee is the fountain (or vein) of lives, the Prophet alludeth either to waters, as is aforeſaid, or to metalls; to ſhew that as the veines of gold, ſilver, and the like, do lye in bank in the boſome and bowels of the earth; ſo doth life in God. Or, to the veines of the body, which as ſo many rivers or rivolets derive their blood from that red Sea, the liver. Certain it is, that man hath neither life nor light in himſelf, till it be communicated unto him from God.