1 Samuel 14:13-15

13Jonathan climbed up, using his hands and feet, with his armor-bearer right behind him. The Philistines fell before Jonathan, and his armor-bearer followed and killed behind him. 14In that first attack Jonathan and his armor-bearer killed some twenty men in an area of about half an acre. 15Then panic struck the whole army—those in the camp and field, and those in the outposts and raiding parties—and the ground shook. It was a panic sent by God.