I will cut off—the arm of thy father's house— i.e. The power and authority; of which the arm in Scripture is the emblem. The Chaldee renders it, I will cut off the strength of thy seed.
Related Commentaries of 1 Samuel 2:31
1 Samuel 2:31
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 thine house.