'Old' in the Bible

If its roots grow old in the groundand its stump starts to die in the soil,

Why do the wicked continue to live,growing old and becoming powerful?

So Elihu son of Barachel the Buzite replied:I am young in years,while you are old;therefore I was timid and afraidto tell you what I know.

It is not only the old who are wiseor the elderly who understand how to judge.

Then Job died, old and full of days.