Saul and all the people who were with him were gathered together, and came to the battle: and, behold, every man's sword was against his fellow, [and there was] a very great confusion.
Half a furrow of land (1 Samuel 14:14) was half a parcel of land that a yolk of oxen could plow in one day. Evidently God assisted Jonathan by sending a mild earthquake to unnerve the Philistines further (1 Samuel 14:15; cf. Deuteronomy 7:23).