'Age' in the Bible

“You will come to your grave in old age,Like the stacking of grain [on the threshing floor] in its season.

“Inquire, please, of past generations,And consider and apply yourself to the things searched out by their fathers.

“Indeed, how could the strength of their hands profit me?Vigor had perished from them.

“I thought age should speak,And a multitude of years should teach wisdom.