Commentators highlight a crucial detail: Ahab's 400 prophets used the generic title 'Lord' (Adonai), but Jehoshaphat specifically asked for a prophet of 'Jehovah' (Yahweh). Scholars explain that Jehoshaphat, being a devout king, noticed their reluctance to use God's personal, covenant name. This revealed their lack of true prophetic authority and prompted his search for an authentic word from God.