Pekah, the son of Remaliah, was a king of Israel, the kingdom also called Ephraim. He had been a captain of his predecessor, Pekahiah, and seized the throne by conspiring against him: he killed Pekahiah in the palace at Samaria, aided by fifty Gileadites, and reigned in his place for twenty years, doing evil in the sight of the Lord (2 Kings 15:25-30). During his reign Tiglath-pileser, king of Assyria, took the land of Naphtali and carried its people captive to Assyria (2 Kings 15:29).
Pekah allied with Rezin, king of Syria, and the two went up toward Jerusalem to war against it in the days of Ahaz, king of Judah, but could not prevail against the city (2 Nephi 17:1; Isaiah 7:1).
Hoshea the son of Elah then conspired against Pekah, struck him down, and reigned in his place (2 Kings 15:30).