'Thirty ninth' in the Bible

In the thirty-ninth year of Judah’s King Uzziah, Shallum son of Jabesh became king; he reigned in Samaria a full month.

In the thirty-ninth year of Judah’s King Azariah, Menahem son of Gadi became king over Israel and reigned 10 years in Samaria.

In the thirty-ninth year of his reign, Asa developed a disease in his feet, and his disease became increasingly severe. Yet even in his disease he didn’t seek the Lord but only the physicians.