Their line is gone out through all the earth. It is much disputed what "their line" means. The word used, qav ( קַו), means, ordinarily, a "measuring-line" (Ezekiel 47:3 : Zechariah 1:16, etc.), whence it comes to have the further sense of a terminus or boundary; that which the measuring-line marks out.
It is also thought to have signified an architect's rule; and, hence, anything regulative, as a decree, precept, or law (see Isaiah 28:10). The LXX. translated it in this place by φθόγγος, "a musical sound;" and Dr.
Kay supposes "the regulative chord," or "key-note." to be intended. Perhaps "decree" would be in this place the best rendering, since it would suit the "words" (minim) of the second clause. The "decree" of the heavens is one proclaiming the glory of God, and the duty of all men to worship him.
And their words to the end of the world. Though they have neither speech nor language, nor any articulate words, yet they have "words" in a certain sense. Millim is said to be used of thoughts just shaping themselves into language, but not yet uttered (Kay).
In them hath he set a tabernacle for the sun. God has made the heavens the sun's dwelling-place, the place where he passes the day.