There was a very great discomfiture Namely, in the army of the Philistines; which, it is likely, consisted of various nations, and in the confusion into which they were thrown, they fell upon one another, not distinguishing friends from enemies. The Hebrews that were with the Philistines Having gone with their army, either by constraint, as servants, or in policy, to gain their favour and protection. They also turned to be with the Israelites In the midst of this battle they went over to their own countrymen.
Related Commentaries of 1 Samuel 14:20
1 Samuel 14:20-21
20 And Saul and all the people that were with him assembledf themselves, and they came to the battle: and, behold, every man's sword was against his fellow, and there was a very great discomfiture.
21 Moreover the Hebrews that were with the Philistines before that time, which went up with them into the camp from the country round about, even they also turned to be with the Israelites that were with Saul and Jonathan.