He; either,
1. Man, the miner; or,
2. God, of whose works of nature he here speaks; or,
3. God as the chief author and director, and man as God's instrument in the work. An end; or, a bound, how far the darkness shall reach, and how far the dark and hidden parts and treasures of the earth shall be searched, and discovered, and brought to light. All perfection, i.e. metals and minerals, which are nothing else but earth concocted, and hardened, and brought to maturity and perfection. Or, unto all perfection, i.e. he perfectly and exactly searcheth them out; although the Hebrew lamed may be here only a note of the accusative case, as our translation takes it. The stones; either gems and precious stones, which are called by this word, Proverbs 26:8; or those stones out of which the metals forementioned are taken. Of darkness, and the shadow of death; which lie hid in the dark and deadly shades and bowels of the earth.