Matthew Henry highlights that Jehoshaphat's deliverance is a powerful lesson. By allying with the wicked King Ahab, Jehoshaphat was mistaken for him and nearly killed, showing the danger of associating with evildoers. However, God mercifully intervened. The enemy captains turning back demonstrates that while God was displeased with Jehoshaphat's choice, He had not deserted him, proving to be a faithful friend.