Hosea 13:1

When members of the tribe of Ephraim spoke, the other Israelites trembled because they looked to Ephraim for leadership (cf. Judges 8:1-3; Judges 12:1-6). Jacob had prophesied that Ephraim would lead (Genesis 48:13-20), and the first king of the Northern Kingdom, Jeroboam I, had come from the tribe of Ephraim (1 Kings 11:26; 1 Kings 12:25). The Ephraimites exalted themselves in the North as well. Yet they were also the leaders in Baal worship. Therefore they were as good as dead since God would judge idolaters.