Which wise men have told from their fathers - Which they have received from their ancestors and communicated to others. Knowledge among the ancients was communicated chiefly by tradition from father to son. They had few or no written records, and hence, they embodied the results of their observation in brief, sententious maxims, and transmitted them from one generation to another.

And have not hid it - They have freely communicated the result of their observations to others.

Which wise men have told from their fathers,.... Men wise in the best sense, not to do evil, but to do good; not worldly wise men, but such who have wisdom, sound wisdom in the inward parts; who are wise to salvation, and who are partakers of divine and spiritual wisdom; and such men, as they would never tell an untruth, so they would never report a false or a foolish thing they had heard, nor any thing but upon a good testimony, what they have received from their fathers, who were also wise and good men; and therefore such a testimony, though not ocular, but by tradition, deserves regard:

and have not hid it; their fathers did not hide it from them, and what they have received from their fathers they did not hide it from their children; and so it came to be handed down from one to another with great truth, exactness, and certainty, and to be depended upon, see Psalm 44:1.

Which wise men have told from their fathers, and have not hid it:

15:18 Hid - They judged it to be so certain and important a truth, that they would not conceal it in their own breasts.

18. Rather, "and which as handed down from their fathers, they have not concealed."

15:17-35 Eliphaz maintains that the wicked are certainly miserable: whence he would infer, that the miserable are certainly wicked, and therefore Job was so. But because many of God's people have prospered in this world, it does not therefore follow that those who are crossed and made poor, as Job, are not God's people. Eliphaz shows also that wicked people, particularly oppressors, are subject to continual terror, live very uncomfortably, and perish very miserably. Will the prosperity of presumptuous sinners end miserably as here described? Then let the mischiefs which befal others, be our warnings. Though no chastening for the present seemeth to be joyous, but grievous, nevertheless, afterward it yieldeth the peaceable fruits of righteousness to them that are exercised thereby. No calamity, no trouble, however heavy, however severe, can rob a follower of the Lord of his favour. What shall separate him from the love of Christ?