Albert Barnes Commentary 1 Samuel 2:31

"Behold, the 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." — 1 Samuel 2:31 (ASV)

I will cut off your arm ... - A strong phrase for breaking down the strength and power, of which the arm is the instrument in man . See 1 Samuel 2:33.