Adam Clarke on Job 33:16

III. By secret Inspirations

Then he openeth the ears of men, and sealeth, etc. - A dream or a vision simply considered is likely to do no good; it is the opening of the understanding, and the pouring in of the light, that make men wise to salvation. Serious alarms, holy purposes, penitential pangs for past sins, apprehension of death and judgment, discoveries of God's justice, of Christ's love, of the world's vanity, of heaven's excellence, etc., etc., etc., are often used by the Divine Spirit to withdraw men from their evil purpose, and to hide pride from man, Job 33:17; and of all these openings of the ear of the heart, and sealing instructions upon the conscience, we have numerous examples in the history of the Church, in the experience of good men, and even in the civil and providential history of all nations.