'Grey' in the Bible

But he said, My son shall not go down with you, for his brother is dead, and he alone is left; and if mischief should befall him by the way in which ye go, then would ye bring down my grey hairs with sorrow to Sheol.

And if ye take this one also from me, and mischief should befall him, ye will bring down my grey hairs with misery to Sheol.

it will come to pass when he sees that the lad is not there, that he will die; and thy servants will bring down the grey hairs of thy servant our father with sorrow to Sheol.

The glory of young men is their strength; and the beauty of old men is the grey head.