Read Judges 15:15 Using Other Translations
And he found a new jawbone of an ass, and put forth his hand, and took it, and slew a thousand men therewith.
And he found a fresh jawbone of a donkey, and put out his hand and took it, and with it he struck 1,000 men.
Then he found the jawbone of a recently killed donkey. He picked it up and killed 1,000 Philistines with it.