He setteth an end to darkness, and searcheth out all perfection: the stones of darkness, and the shadow of death.
'Man makes an end of darkness' by exploring the darkest depths (with torches).
All perfection - rather, carries out his search to the utmost perfection х lªkaal (H3605) takliyt (H8503)]: 'most thoroughly searches the stones of darkness and of the shadow of death' (thickest gloom) - i:e., the stones, whatever they be, embedded in the darkest bowels of the earth (Umbreit). (Job 26:10.)