Verse 6. - His going forth is from the end of the heaven The poet, like other poets, describes the phenomena as they appear to him. He does not broach any astronomical theory. And his circuit (i.e. his course) unto the ends of it; i.e. he proceeds from one end of the heavens to the other. And there is nothing hid from the heat thereof. Many things are hidden from the light of the sun, but nothing from its "heat." which is the vital force whence the whole earth receives life and energy.

19:1-6 The heavens so declare the glory of God, and proclaim his wisdom, power, and goodness, that all ungodly men are left without excuse. They speak themselves to be works of God's hands; for they must have a Creator who is eternal, infinitely wise, powerful, and good. The counter-changing of day and night is a great proof of the power of God, and calls us to observe, that, as in the kingdom of nature, so in that of providence, he forms the light, and creates the darkness, Isa 45:7, and sets the one against the other. The sun in the firmament is an emblem of the Sun of righteousness, the Bridegroom of the church, and the Light of the world, diffusing Divine light and salvation by his gospel to the nations of the earth. He delights to bless his church, which he has espoused to himself; and his course will be unwearied as that of the sun, till the whole earth is filled with his light and salvation. Let us pray for the time when he shall enlighten, cheer, and make fruitful every nation on earth, with the blessed salvation. They have no speech or language, so some read it, and yet their voice is heard. All people may hear these preachers speak in their own tongue the wonderful works of God. Let us give God the glory of all the comfort and benefit we have by the lights of heaven, still looking above and beyond them to the Sun of righteousness.His going forth is from the end of the heaven,.... From the east, where it rises:

and his circuit to the ends of it; to the west, where it sets; which is expressive of the large compass the Gospel administration took in the times of the apostles; whereby the grace of God appeared to all men, shone out in a very illustrious manner, and Christ became, what the sun is to the earth, the light of the world;

and there is nothing hid from the heat thereof; though things may be hid from the light of it, yet not from its heat, so forcible and penetrating it is Christ, in the administration of the Gospel to all to whom it comes with power, not only enlightens their minds, but quickens their souls, warms their hearts, causes them to burn within them, arises with healing in his wings upon them, and makes his Gospel the savour of life unto life unto them. The psalmist goes on to say more and excellent things of the Gospel, its nature and usefulness.