He sent this message to King Jehoshaphat of Judah: "The king of Moab has rebelled against me. Will you fight with me against Moab?" Jehoshaphat replied, "I will join you in the campaign; my army and horses are at your disposal."

He restored the border of Israel from Lebo Hamath in the north to the sea of the Arabah in the south, in accordance with the word of the Lord God of Israel announced through his servant Jonah son of Amittai, the prophet from Gath Hepher.

During Pekah's reign over Israel, King Tiglath-pileser of Assyria came and captured Ijon, Abel Beth Maacah, Janoah, Kedesh, Hazor, Gilead, and Galilee, including all the territory of Naphtali. He deported the people to Assyria.