Adam Clarke's Bible Commentary Verse 9. Great men are not always wise ] This is a true saying, which the experience of every age and every country increasingly verifies. And it is most certain that, in the case before us, the aged did not understand judgment; they had a great many wise and good sayings, which they had collected, but showed neither wisdom nor discretion in applying them.
Matthew Henry Commentary
Verses 6-14 - Elihu professes to speak by the inspiration of the Holy Spirit, an corrects both parties. He allowed that those who had the longes experience should speak first. But God gives wisdom as he pleases; thi encouraged him to state his opinion. By attention to the word of God and dependence upon the Holy Spirit, young men may become wiser tha the aged; but this wisdom will render them swift to hear, slow to speak, and disposed to give others a patient hearing.
Original Hebrew לא3808 רבים7227 יחכמו2449 וזקנים2205 יבינו995 משׁפט׃4941