He setteth an end to darkness, {b} and searcheth out all perfection: the stones of darkness, and the shadow of death.

(b) There is nothing but it is compassed within certain limits, and has an end, but God's wisdom.

Wesley's Notes

28:3 Perfection - Whatever is deeply wrought in the deepest caverns. Stones of darkness - The precious stones which lie hid in the dark bowels of the earth, where no living thing can dwell.

Jamieson-Fausset-Brown Bible Commentary

3. "Man makes an end of darkness," by exploring the darkest depths (with torches).

all perfection-rather, carries out his search to the utmost perfection; most thoroughly searches the stones of darkness and of the shadow of death (thickest gloom); that is, the stones, whatever they be, embedded in the darkest bowels of the earth [Umbreit] (Job 26:10).

Matthew Henry's Concise Commentary

28:1-11 Job maintained that the dispensations of Providence were regulated by the highest wisdom. To confirm this, he showed of what a great deal of knowledge and wealth men may make themselves masters. The caverns of the earth may be discovered, but not the counsels of Heaven. Go to the miners, thou sluggard in religion, consider their ways, and be wise. Let their courage and diligence in seeking the wealth that perishes, shame us out of slothfulness and faint-heartedness in labouring for the true riches. How much better is it to get wisdom than gold! How much easier, and safer! Yet gold is sought for, but grace neglected. Will the hopes of precious things out of the earth, so men call them, though really they are paltry and perishing, be such a spur to industry, and shall not the certain prospect of truly precious things in heaven be much more so?