Their line; either,
1. Their admirable structure made exactly, and as it were by line: see Job 38:5 Malachi 1:16. Or, 2. Their lines, the singular number being put for the plural, for the line answereth to the words in the next clause. And by line or lines he may understand their writing, as this very word is taken, Isaiah 28:10, which is made up of several lines. And this expression may seem to be very fit and proper, because the heavens do not teach men audibly, or by speaking to their ears, but visibly, by propounding things to their eyes, which is done in lines or writongs. Is gone out, i.e. is spread abroad or drawn forth. Through all the earth; so as to be seen and read by all the inhabitants of the earth. Their words, i.e. their magnificent structure, and their exquisite order, and most regular course, by which they declare their author, no less than if they used many words or long discourses to that purpose, or no less than men discover their minds by their words. See more concerning this verse upon Romans 10:18, where it is applied to the preaching of the gospel by the apostles in the several parts of the world. A tabernacle; which is a movable habitation, and therefore fitly applied to the sun, which is here described to be in constant and perpetual motion, Psalms 19:5,6. For the sun; which being the most illustrious and useful of all the heavenly bodies, is here particularly mentioned.