Jehoshaphat was very wealthy and greatly respected. He made an alliance by marriage with Ahab,

In the seventeenth year of King Jehoshaphat’s reign over Judah, Ahab’s son Ahaziah became king over Israel in Samaria. ¹  He ruled for two years over Israel.

In the eighteenth year of King Jehoshaphat’s reign over Judah, Ahab’s son Jehoram became king over Israel in Samaria; ¹  he ruled for twelve years.

The Lord made his kingdom secure; ¹  all Judah brought tribute to Jehoshaphat, and he became very wealthy and greatly respected. ² 

Messengers ¹  arrived and reported to Jehoshaphat, “A huge army is attacking you from the other side of the Dead Sea, ²  from the direction of Edom. ³  Look, they are in Hazezon Tamar (that is, En Gedi).”

Some of the Philistines brought Jehoshaphat tribute, including a load of silver. The Arabs brought him 7,700 rams and 7,700 goats from their flocks.