After him was Shamgar the son of Anath, who struck of the Philistines six hundred men with an ox-goad: and he also saved Israel.
Evidently Shamgar seized an opportunity to kill 600 Philistines with this unusual instrument that he used as a weapon (cf. 2 Samuel 23:11). The text does not say how quickly he did this, whether all at once, or one by one in guerrilla type warfare.