15. slumberings—light is opposed to "deep sleep." Elihu has in view Eliphaz (Job 4:13), and also Job himself (Job 7:14). "Dreams" in sleep, and "visions" of actual apparitions, were among the ways whereby God then spake to man (Ge 20:3).

     16. Literally, "sealeth (their ears) to Himself by warnings," that is, with the sureness and secrecy of a seal He reveals His warnings [UMBREIT]. To seal up securely (Job 37:7).