It is not only the old who are wise

Job 32:1-22
Young man Elihu said:
It is not only the old who are wise not only the aged who understand what is right.
I will show partiality to no one, nor will I flatter any man.
Elihu has not been mentioned or spoken, before. He has been a silent bystander, holding back out of deference to his elders. But he can bear it no longer. His pent-up thoughts burst out in a long, unstoppable tirade長篇大論.
Elihu is the original angry young man. His elders are lost for words, but he is simply bursting with indignation at Job's attitude, dying to have his say.
Why?
Fear the Lord is wisdom, so even getting older does not means wiser than younger. Young man has more angry than older one. Angry can not do any good thing.
How?
It is not only the old who are wise, fear the Lord is wisdom and wisdom comes from God.