Hast thou commanded the morning? That is, the morning light, or the sun, which is the cause of it. Didst thou create the sun, and appoint the order and succession of day and night. Since thy days Since thou wast born: this work was done long before thou wast born. And caused the day-spring to know its place To observe the punctual time when, and the point of the heavens where it should arise; which varies every day. That it might take hold of the ends of the earth That this morning light should in a moment spread itself from one end of the hemisphere to the other. That the wicked might be shaken out of it From the face of the earth. And this effect the morning light hath upon the wicked, because it discovers them, whereas darkness hides them; and because it brings them to condign punishment, the morning being the usual time for executing judgment.
Related Commentaries of Job 38:12
Job 38:12-13
12 Hast thou commanded the morning since thy days; and caused the dayspring to know his place;
13 That it might take hold of the endsd of the earth, that the wicked might be shaken out of it?