'Twelfth' in the Bible

In the twelfth year of Joram son of Ahab king of Israel reigned hath Ahaziah son of Jehoram king of Judah;

In the twelfth year of Ahaz king of Judah reigned hath Hoshea son of Elah in Samaria, over Israel -- nine years,

And it cometh to pass, in the thirty and seventh year of the removal of Jehoiachin king of Judah, in the twelfth month, in the twenty and seventh of the month hath Evil-Merodach king of Babylon lifted up, in the year of his reigning, the head of Jehoiachin king of Judah, out of the house of restraint,