Psalms 36:9

“For with thee [is] the fountain of life, etc.] Or “lives” f512: God himself is the fountain of living waters; this is a reason proving the happiness of those that trust in the Lord, and that they shall enjoy the above things; because with God the object of their trust is the fountain of life; not only of natural life, from whom they have it, and by whom it is supported, but of spiritual life, being quickened by him when dead in sin, by virtue of which they live by faith on Christ, and also of eternal life; and the phrase denotes, that life is originally in God as in its fountain, and that both the fulness of it is with him, and the freeness of it in the communication of it to others, as well…”

“Light is an emblem of all blessings, given of God as a means to gain more.”

“For with thee is the fountain of life - The fountain or source from which all life flows. All living beings derive their origin from thee, as streams flow from fountains; all that is properly “called” life proceeds from thee; everything which makes life real life - which makes it desirable or happy - has its origin in thee. The psalmist evidently meant here to include more than mere “life” considered as animated existence. He recalls what he had referred to in the previous verses - the various blessings which proceeded from the mercy and loving-kindness of God, and which were attendant on his worship; and he here says that all this - all that makes man happy - all that can properly be…”

“Life - It is in God as in a fountain, and from him is derived to us. But - Of that glorious and blessed, and endless life, which alone is worthy of the name. Light - In the light of thy glorious presence, which shall be fully manifested, when we see thee face to face. Light - Joy and comfort, and happiness: the word light is elegantly repeated in another signification; in the former clause it is light discovering, in this light, discovered or enjoyed. Psalms 36:11”

“36:9 Light represents salvation and celebration (18:25-29; 27:1; cp. 35:6).”

“For: Isa 12:3; Jer 2:13; Joh 4:10, Joh 4:14, Joh 7:37-39; Rev 21:6, Rev 22:17 in thy: Psa 27:1; Job 29:3; Pro 4:18; Isa 2:5, Isa 60:1, Isa 60:2, Isa 60:19; Mal 4:2; Joh 1:8, Joh 1:9; Joh 8:12; Co2 4:6; Jam 1:17; Pe1 2:9; Jo1 1:7; Rev 21:23 Psalms 36:10”