'Thirty ninth' in the Bible

Shallum son of Jabesh became king in the thirty-ninth year of King Uzziah's reign over Judah. He reigned for one month in Samaria.

In the thirty-ninth year of King Azariah's reign over Judah, Menahem son of Gadi became king over Israel. He reigned for twelve years in Samaria.

In the thirty-ninth year of his reign, Asa developed a foot disease. Though his disease was severe, he did not seek the Lord, but only the doctors.