The spirit of the Lord came rushing on him, and with a donkey jaw bone he defeated the enemy

By the Spirit Of The Lord, he defeated his enemies

And when he came to Lehi, the Philistines came out, meeting him with loud cries; then the spirit of the Lord came rushing on him, and the cords on his arms became like grass which has been burned with fire, and the bands came falling off his hands.
Judges 15:14

And taking up the mouth-bone of an ass newly dead, which he saw by chance on the earth, he put to death a thousand men with it.
Judges 15:15