2 Kings 12:1

1In the seventh year of Jehu [king of Israel], 12:1 Judah and Israel each had a king named Joash or Jehoash, and the Hebrew uses the two forms of the name interchangeably. Since the times of their reigns overlapped, it is easy to confuse them. The same potential confusion exists with the name Joram/Jehoram.Jehoash became king [over Judah], and he reigned forty years in Jerusalem. His mother’s name was Zibiah of Beersheba.