Psalms 136:7

To him that made great lights - Genesis 1:14. The sun and the moon are here particularly referred to.

For his mercy ... - As manifested in all that has followed from the creation and diffusion of light - (all the beauty in the universe as seen; all the life, beauty, and vigor in the vegetable and animal world; all that there is of life and happiness in the universe - for there could be neither if darkness reigned everywhere); light, the emblem of happiness; the source of joy; the producer, in a great measure, of the beauties of the universe, and the revealer of those beauties everywhere. How can a man think of light and not praise its Author?