Jeremiah 25:3

From the thirteenth year of Josiah the son of Amon king of Judah, even unto this day, that is the three and twentieth year, the word of the LORD hath come unto me, and I have spoken unto you, rising early and speaking; but ye have not hearkened.

From the thirteenth year of Josiah, in which Jeremiah began to prophesy (), to the end of Josiah's reign was 19 years (); the three months () of Jehoahaz' reign, with the not quite complete 4 years of Jehoiakim (), added to the 19 years, make up 23 years () in all.