God answers man in two ways. One is by visions of the night, to withhold him from destruction.
In Job 33:14 read God speaketh in one way, yea in two if man regardeth it not. With the vision of the night, cf. Job 4:12 f. Sealeth their instruction (Job 33:16) means that God, after opening the ear, closes it and seals the instruction communicated, or else that God impresses the instruction on the hearer as a seal is stamped upon wax. In Job 33:18 read as in mg. That he may keep back.