'Thirty ninth' in the Bible

Shallum the son of Jabesh, began to reign, in the thirty-ninth year of Uzziah, king of Judah, - for the space of a month in Samaria.

In the thirty-ninth year of Azariah king of Judah, began Menahem son of Gadi to reign over Israel, ten years reigned he , in Samaria.

And Asa became diseased - in the thirty-ninth year of his reign - in his feet, exceedingly severe, was his disease, - yet, even in his disease, he sought not Yahweh, but unto physicians.