John Gills Exposition of the Bible Commentary - 1 Kings 22:51
Ahaziah the son of Ahab began to reign over Israel in Samaria the seventeenth year of Jehoshaphat king of Judah ,.... It is observed, that Jehoshaphat began to reign in the fourth year of Ahab, and Ahab reigned twenty two years, see 1 Kings 22:41 , and therefore Ahab's son must begin to reign in the eighteenth year of Jehoshaphat; but perhaps he was made king in his father's lifetime, before he went on his expedition to Ramothgilead, or Ahab's reign was not twenty two years complete: ... read more
Matthew Henry's Complete Commentary - 1 Kings 22:41-53
Here is, I. A short account of the reign of Jehoshaphat king of Judah, of which we shall have a much fuller narrative in the book of Chronicles, and of the greatness and goodness of that prince, neither of which was lessened or sullied by any thing but his intimacy with the house of Ahab, which, upon several accounts, was a diminution to him. His confederacy with Ahab in war we have already found dangerous to him, and his confederacy with Ahaziah his son in trade sped no better. He offered to... read more