When it is said the land had rest eighty years, some think it meant chiefly of that part of the land which lay eastward on the banks of Jordan, which had been oppressed by the Moabites; but it seems, by this passage here, that the other side of the country which lay south-west was in that time infested by the Philistines, against whom Shamgar made head. 1. It seems Israel needed deliverance, for he delivered Israel; how great the distress was Deborah afterwards related in her song (Jdg. 5:6), that in the days of Shamgar the highways were unoccupied, etc.; that part of the country which lay next to the Philistines was so infested with plunderers that people could not travel the roads in safety, but were in danger of being set upon and robbed, nor durst they dwell in the unguarded villages, but were forced to take shelter in the fortified cities. 2. God raised him up to deliver them, as it should seem, while Ehud was yet living, but superannuated. So inconsiderable were the enemies for number that it seems the killing of 600 of them amounted to a deliverance of Israel, and so many he slew with an ox-goad, or, as some read it, a plough-share. It is probable that he was himself following the plough when the Philistines made an inroad upon the country to ravage it, and God put it into his heart to oppose them; the impulse being sudden and strong, and having neither sword nor spear to do execution with, he took the instrument that was next at hand, some of the tools of his plough, and with that killed so many hundred men and came off unhurt. See here, (1.) That God can make those eminently serviceable to his glory and his church’s good whose extraction, education, and employment, are very mean and obscure. He that has the residue of the Spirit could, when he pleased, make ploughmen judges and generals, and fishermen apostles. (2.) It is no matter how weak the weapon is if God direct and strengthen the arm. An ox-goad, when God pleases, shall do more than Goliath’s sword. And sometimes he chooses to work by such unlikely means, that the excellency of the power may appear to be of God.