Elihu was afraid to speak because of his young age (Job 32:6-32:10)

“Elihu the son of Barachel the Buzite answered.

‘I am young in years.

You are aged.

Therefore I was timid and afraid

To declare my opinion to you.

I said.

‘Let days speak!

Let many years teach wisdom!’

But truly it is the Spirit in a mortal,

The breath of the Almighty Shaddai,

That makes him understand.

It is not the old that are wise.

The aged do not understand what is right.

Therefore I say.

‘Listen to me!

Let me also declare my opinion!’”

Elihu said that he was young, which is why he had not spoken yet. The others were older so that he was timid and afraid to insert his opinion. He had hoped that he could learn from their wisdom. However, their so-called aged wisdom was lacking. It was the breath and the Spirit of the almighty Shaddai that brought understanding and wisdom. Elihu went on the offensive as he said that old people are not wise. They do not understand what is right. He wanted them to listen to him and his opinion.