King Jehoshaphat was the fourth king of the Kingdom of Judah, ruling from approximately 870 to 848 BCE. He is known for his efforts to strengthen the kingdom, promote the worship of Yahweh, and establish judicial reforms. Jehoshaphat formed alliances, notably with King Ahab of Israel, which sometimes led to conflicts. During his reign, Jehoshaphat faced military challenges, including invasions from neighboring nations. He is remembered for his faith in God and his reliance on prayer during crises. His story is primarily found in the biblical books of 2 Chronicles and 1 Kings, highlighting his leadership and devotion.