'Thirty ninth' in the Bible

Jabesh's son Shallum began his reign in the thirty-ninth year of the reign of Uzziah, king of Judah. He reigned a full month in Samaria,

In the thirty-ninth year of the reign of Azariah, king of Judah, Gadi's son Menahem began a ten-year reign over Israel from Samaria.

In the thirty-ninth year of his reign, Asa suffered from a foot disease. Even though he suffered greatly, he never sought the LORD, but instead looked to doctors.