Hast thou entered into the springs of the sea? or hast thou walked in the search of the depth? Hast thou entered into the springs of the sea? - Of these springs, inlets, or outlets of the sea, we know just as much as Job. There was prevalent among philosophers an opinion, that through a porous bottom fresh matter was constantly oozing by which the sea was supplied with new materials. But through such pores these materials might as well ooze out as ooze in.
Walked in the search of the depth? - Hast thou walked from the shallow beach through the great ocean's bed, till thou hast arrived at its profoundest depths? In other words, Dost thou know the depths of the sea? Job, we may presume, did not. No man since him has found them out. In multitudes of places they are unfathomed by any means hitherto used by man.