Albert Barnes Commentary 1 Samuel 13:4

"And all Israel heard say that Saul had smitten the garrison of the Philistines, and also that Israel was had in abomination with the Philistines. And the people were gathered together after Saul to Gilgal." — 1 Samuel 13:4 (ASV)

To Gilgal - The Wadi Suweinit opens into the plain of the Jordan where Gilgal was situated. For the sanctity of Gilgal, see the note on 1 Samuel 11:14.