2 Kings 13:1
In the three and twentieth year of Joash the son of Ahaziah king of Judah Jehoahaz the son of Jehu began to reign over Israel in Samaria, and reigned seventeen years.
In the twenty and third year of Joash the son of Ahaziah king of Judah,.... The same year he was so zealous and busy in repairing the temple, 2 Kings 12:6,
Jehoahaz the son of Jehu began to reign over Israel in Samaria; whereas Joash began to reign in the seventh year of Jehu, and Jehu reigned but twenty eight years, 2 Kings 10:36, and 2 Kings 12:1, this could be but the twenty first of Joash; to reconcile which it must be observed, that it was at the beginning of the seventh year of Jehu that Joash began to reign, and at the beginning of the twenty third of Joash that Jehoahaz began to reign, as the Jewish commentators observe:
and reigned seventeen years; the two last of which were in common with his son, as Junius, see 2 Kings 13:10