1 Samuel 14:16-23. The Israelites observe the confusion among the Philistines, and find that Jonathan and his armour-bearer are missing. Saul proposes to obtain an oracle by means of the ephod. (Thus with LXX; the references to the Ark have been introduced by an editor.) But, seeing the growing panic amongst the enemy, the king cuts short the priest in his ritual, and leads the people in pursuit. They are joined by their fellow-countrymen who were serving with the Philistines, and by Israelite refugees. The pursuit is carried beyond Beth-horon. (So probably, instead of Beth-aven, which, however, some would retain and understand as Beth-el.)
1 Samuel 14:16-23
16 And the watchmen of Saul in Gibeah of Benjamin looked; and, behold, the multitude melted away, and they went on beating down one another.
17 Then said Saul unto the people that were with him, Number now, and see who is gone from us. And when they had numbered, behold, Jonathan and his armourbearer were not there.
18 And Saul said unto Ahiah, Bring hither the ark of God. For the ark of God was at that time with the children of Israel.
19 And it came to pass, while Saul talked unto the priest, that the noisee that was in the host of the Philistines went on and increased: and Saul said unto the priest, Withdraw thine hand.
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.
22 Likewise all the men of Israel which had hid themselves in mount Ephraim, when they heard that the Philistines fled, even they also followed hard after them in the battle.
23 So the LORD saved Israel that day: and the battle passed over unto Bethaven.