The sun to rule by day - Genesis 1:16. Margin, as in Hebrew, for the ruling of the day. That is, to control, as it were, the day; to determine its length - its beginning - its ending - to make it what it is.

For his mercy ... - By all the blessings of day as distinguished from night and darkness - by all that the sun in his daily course does to diffuse life, joy, peace, comfort, happiness on the earth - by all that are warmed by its beams, cheered by its light, guided in labor, guarded from dangers - do we derive an argument for the mercy of God; by all this there is laid a foundation for his praise.

The sun to rule by day,.... Which is the greater light, Genesis 1:16;

for his mercy endureth for ever: this great light, so beneficial to the earth and the inhabitants of it, which was made near six thousand years ago, still continues, and will to the end of time; enlightening the world, warming the air and earth, imparting its light and heat to all creatures on it, and influencing the earth to bring forth a variety of things for the use and delight of mankind, called "the precious things brought forth by the sun", Deuteronomy 33:14; an emblem of a more beneficial light, in which the rich grace and mercy of God appear, and for which we have reason to give thanks; even the sun of righteousness, the Messiah, the light of the world, the author of the light of nature, grace, and glory; and who will continue as long as the sun, and when that shall be no more, Malachi 4:2.

The sun to rule by day: for his mercy endureth for ever:

to rule...: Heb. for the rulings by day

136:1-9 Forgetful as we are, things must be often repeated to us. By mercy we understand the Lord's disposition to save those whom sin has rendered miserable and vile, and all the provision he has made for the redemption of sinners by Jesus Christ. The counsels of this mercy have been from everlasting, and the effects of it will endure for ever, to all who are interested in it. The Lord continues equally ready to show mercy to all who seek for it, and this is the source of all our hope and comfort.