Job 38:12

Dayspring - An "up-rising", hence sunrising.

Hast thou commanded the morning - This refers to dawn or morning twilight, occasioned by the refraction of the solar rays by means of the atmosphere; so that we receive the light by degrees, which would otherwise burst at once upon our eyes, and injure, if not destroy, our sight; and by which even the body of the sun himself becomes evident several minutes before he rises above the horizon.

Caused the dayspring to know his place - This seems to refer to the different points in which daybreak appears during the course of the earth's revolution in its orbit; and which variety of points of appearing depends on this annual revolution. For, as the earth goes round the sun every year in the ecliptic, one half of which is on the north side of the equinoctial, and the other half on its south side, the sun appears to change his place every day. These are matters which the wisdom of God alone could plan, and which his power alone could execute. It may be just necessary to observe that the dawn does not appear, nor the sun rise exactly in the same point of the horizon, two successive days in the whole year, as he declines forty-three degrees north, and forty-three degrees south, of east; beginning on the 21st of March, and ending on the 22d of December; which variations not only produce the places of rising and setting, but also the length of day and night. And by this declination north and south, or approach to and recession from the tropics of Cancer and Capricorn, the solar light takes hold of the ends of the earth, Job 38:13, enlightens the arctic and antarctic circles in such a way as it would not do were it always on the equinoctial line; these tropics taking the sun twenty-three and a half degrees north, and as many south, of this line.

NOTE: For the meaning of this uncommonly beautiful imagery, see the notes on this place.

(f) So all the phenomena of light are represented as evincing the wisdom of God, and as wholly beyond the ability of man to explain or comprehend them; yet so represented as to show that it had been a subject of careful observation and reflection:

Where is the way to the dwelling-place of light?

And the darkness, where is its place?

That thou couldest conduct it to its limits,

And that thou shouldest knorr the path to its dwelling?

Job 38:12Hast thou commanded the morning since thy days - That is, in thy lifetime hast thou ordered the light of the morning to shine, and directed its beams over the world? God appeals to this as one of the proofs of his majesty and power - and who can look upon the spreading light of the morning and be insensible to the force and beauty of the appeal? The transition from the ocean to the morning may have been partly because the light of the morning is one of the striking exhibitions of the power of God, and partly because in the creation of the world the light of the sun was made to dawn soon after the gathering together of the waters into seas; see Genesis 1:10, Genesis 1:14. The phrase "since thy days," implies that the laws determining the rising of the sun were fixed long before the time of Job. It is asked whether this had been done since he had an existence, and whether he had an agency in effecting it - implying that it was an ancient and established ordinance long before he was born.

Caused the day-spring to know his place - The day-spring (שׁחר shachar) means the "aurora, the dawn, the morning." The mention of its "place" here seems to be an allusion to the fact that it does not always occupy the same position. At one season of the year it appears on the equator, at another north, and at another south of it, and is constantly varying its position. Yet it always knows its place. It never fails to appear where by the long-observed laws it ought to appear. It is regular in its motions, and is evidently under the control of an intelligent Being, who has fixed the laws of its appearing.

38:12 Morning - Didst thou create the sun, and appoint the order and succession of day and night. Since - Since thou wast born: this work was done long before thou wast born. To know - To observe the punctual time when, and the point of the heavens where it should arise; which varies every day.