1 Samuel 14:14-16

And that first strike, which Jonathan and his armor-bearer made, killed about twenty men within as it were half a furrow’s length in an acre of land. And there was a panic in the camp, in the field, and among all the people. The garrison and even the raiders trembled, the earth quaked, and it became a very great panic. And the watchmen of Saul in Gibeah of Benjamin looked, and behold, the multitude was dispersing here and there.