The Hair: White or Gray: A Token of Age
Source: TTT
1 Samuel 12:2
Now here is the king walking before you, and I am old and gray, and my sons are here with you. I have walked before you from my youth until this day.
Psalm 71:18
Even when I am old and gray, do not forsake me, O God, until I proclaim Your power to the next generation, Your might to all who are to come.