Cut off — The head is the seat of wisdom; the hands the instruments of action: both are cut off to shew that he had neither wisdom nor strength to defend himself or his worshippers. Thus the priests by concealing Dagon's shame before, make it more evident and infamous. The stump — Heb. only dagon, that is, that part of it from which it was called Dagon, namely the fishy part, for Dag in Hebrew signifies a fish. It — Upon the threshold; there the trunk abode in the place where it fell, but the head and hands were slung to distant places.
Related Commentaries of 1 Samuel 5:4
1 Samuel 5:4
4 And when they arose early on the morrow morning, behold, Dagon was fallen upon his face to the ground before the ark of the LORD; and the head of Dagon and both the palms of his hands were cut off upon the threshold; only the stump of Dagon was left to him.