For with thee is the fountain of life: in thy light shall we see light. (Ps. 36.9)
Joseph Symonds, The Case and Cure of the Deserted Soul, pp. 333-334:
The brightest star that shines most with light of comfort derives it from the Sun of Righteousness. And therefore, that they may have a sight of that dark and dismal nature of their own hearts, He shuts in His light. And then, when the soul lies in a mournful and distressed case in depths where it finds no bottom, and from whence none can deliver; when a man sees all creatures standing as dead pictures, and reckons himself past all hope, then, I say, God shows Himself to be the God of comfort by commanding light to shine out of darkness, and quieting the high and raging storms, which beat down all before them.