thirty and eight year. Compare with 2 Kings 14:29. Jeroboam died in the fourteenth year of Azariah (or Uzziah). There must have been an interregnum of twenty-four years. See App-50 and comments on 2 Kings 15:1.
Related Commentaries of 2 Kings 15:8
2 Kings 15:8
8 In the thirty and eighth year of Azariah king of Judah did Zachariah the son of Jeroboam reign over Israel in Samaria six months.