During Ahab's reign Moab, which had been conquered by his father, remained tributary; Judah, with whose king, Jehoshaphat, he was allied by marriage, was probably his vassal; only with Damascus is he said to have had strained relations.
On one occasion, when he delivered the army that had been brought out against Moab from a threatened dearth of water (2 Kings iii.), 2 he plainly intimates that, but for his regard to Jehoshaphat, the king of Judah, who was in alliance with Israel, he would not have interfered.
But some catastrophe befell the fleet, and shortly afterwards Jehoshaphat's son Jehoram had to face a revolt in which Edom and the men of Libnah (the Philistines) were concerned.
Asa was succeeded by his son Jehoshaphat.
Moreover, Judah (now under Jehoshaphat) enjoyed intimate relations with Israel during Omri's dynasty, and the traditions of intermarriage, and of co-operation in commerce and war, imply what was practically a united Palestine.