2 Chronicles 19:1 - Albert Barnes' Notes on the Bible

Jehoshaphat ... returned to his house in peace - With the battle of Ramoth-Gilead, and the death of Ahab, the war came to an end. The combined attack of the two kings having failed, their troops had been withdrawn, and the enterprise in which they had joined relinquished. The Syrians, satisfied with their victory, did not press on the retreating foe, or carry the war into their enemies’ country.