'Old Man' in the Bible

Behold, days come, that I will cut off thine arm, and the arm of thy father's house, that there shall not be an old man in thy house.

And thou shalt see an oppressor in my habitation, amidst all the good that shall be done to Israel; and there shall not be an old man in thy house for ever.

And he said to her, What is his form? And she said, An old man comes up; and he is covered with a mantle. And Saul knew that it was Samuel, and he stooped with his face to the ground, and bowed himself.