'White haired' in the Bible

Get up from your seats before the white-haired, and give honour to the old, and let the fear of your God be before you: I am the Lord.

So he sent against them the king of the Chaldaeans, who put their young men to death with the sword in the house of their holy place, and had no pity for any, young man or virgin, old man or white-haired: God gave them all into his hands.