Which commandeth the sun, and it riseth not - Schultens supposes that all this is a description of the deluge - when the mountains were removed, when the fountains of the deep were broken up, and when the sun was obscured and seemed not to rise. Others have supposed that it refers to the fact that the sun is darkened by clouds and tempests, and appears not to rise and shine upon the earth. Others suppose that the allusion is to an eclipse; and others, that it is to the power of God, and means that the rising of the sun depends on him, and that if he should choose to give the command, the heavenly bodies would rise and give light no more. It seems probable that the meaning is, that God has power to do this; that the rising of the sun depends on him; and that he could delay it, or prevent it, at his pleasure. His power over the sun was shown in the time of Joshua, when, at his command, it stood still; but it is not necessary to suppose that there is any reference to this fact here. The whole meaning of the language is met by the supposition that it refers to the power of God, and affirms what he could do, or if it refer to any fact that had been observed, that the allusion is to the darkening of the sun by an eclipse or a tempest. No argument can be derived, therefore, from the expression, in regard to the age of the book.
And sealeth up the stars - The word "seal" in the Scriptures (חתם châtham) is used with considerable latitude of signification. It is employed in the sense of shutting, closing, making fast - as when anything was sealed, it was shut up or made fast. The Hebrews often used a seal, where we would use a lock, and depended on the protection derived from the belief that one would not break open that which was sealed, where we are obliged to rely on the security of the lock against force. If there were honor and honesty among people everywhere, a seal would be as secure as a lock - as in a virtuous community a sealed letter is as secure as a merchant's iron "safe." To "seal up the stars," means so to shut them up in the heavens, as to prevent their shining; to hide them from the view. They are concealed, hidden, made close - as the contents of a letter, a package, or a room are by a seal, indicating that no one is to examine them, and concealing them from the view. So God hides from our view the stars by the interposition of clouds.

Which commandeth the sun - Obscures it either with clouds, with thick darkness, or with an eclipse.
Sealeth up the stars - Like the contents of a letter, wrapped up and sealed, so that it cannot be read. Sometimes the heavens become as black as ebony, and no star, figure, or character, in this great book of God can be read.

Which commandeth the sun, and it riseth not,.... Either he could do it if he would, by a word speaking, as he ordered it to stand still in the times of Joshua, Joshua 10:13, and caused the shadow to return ten degrees it had gone back in the dial of Ahaz, in the times of Hezekiah, 2-Kings 20:11; or else the sense is, it rises not at any other time and place but when and where he commands it; or he commands it not to rise in the same place at one time of the year as at another, and it rises not; or this may be understood of eclipses, or of its being covered with clouds in tempestuous weather for a considerable time together, when it seems as if it was not risen: some think this respects the three days' darkness in Egypt, when the Israelites were there, Exodus 10:22, which was a little before, or about the time of Job; or rather it refers to the general flood, in the times of Noah, when it rained forty days and forty nights, Genesis 7:12, during which time the sun appeared not, and so seemed as if it was not risen; see Amos 8:9; Herodotus (b) relates, from the memoirs of the Egyptians, that the sun rose four times out of its usual course; twice it rose where it now sets, and twice it set where it now rises:
and sealeth up the stars: either by the light of the sun in the daytime, which hides them that they are not visible, or by dark clouds and tempestuous weather in the night; such a season as that was in which the Apostle Paul and the mariners with him were, when neither sun nor stars appeared for many days, Acts 27:20, and so the Targum paraphrases it, and"sealeth up the stars with clouds;''this may also refer to the time of the flood, during the rain of forty days and nights, Genesis 7:4; or to the annual motion of the sun through the ecliptic, which makes the point of the sun's rising and setting vary, and is the reason why some stars appear in summer and are sealed up in winter, and others that are seen in winter are not visible in summer; and so Cocceius interprets it.
(b) Euterpe, sive, l. 2. c. 149.

The sun, at His command, does not rise; namely, in an eclipse, or the darkness that accompanies earthquakes (Job 9:6).
sealeth up the stars--that is, totally covers as one would seal up a room, that its contents may not be seen.