Jamieson, Fausset and Brown on 1 Samuel 5:3-4

3-4. they of Ashdod arose early--They were filled with consternation when they found the object of their stupid veneration prostrate before the symbol of the divine presence. Though set up, it fell again, and lay in a state of complete mutilation; its head and arms, severed from the trunk, were lying in distant and separate places, as if violently cast off, and only the fishy part remained. The degradation of their idol, though concealed by the priests on the former occasion, was now more manifest and infamous. It lay in the attitude of a vanquished enemy and a suppliant, and this picture of humiliation significantly declared the superiority of the God of Israel.