Jeremiah 1:3

It came also in the days of Jehoiakim, the son of Josiah, king of Judah, unto the end of the eleventh year of Zedekiah, the son of Josiah, king of Judah, unto the carrying away of Jerusalem, that is, of its inhabitants, captive in the fifth month. Note that Jeremiah expressly claims divine authority and inspiration for his prophecies, insisting that it is the Word of the Lord which he recorded. He omits the names of Jehoahaz and Jehoiachin from his list, since they reigned only three months each, and his title intends to specify in a general way only. "Since Jeremiah labored from the thirteenth year of Josiah, consequently eighteen years under Josiah, and eleven years each under Jehoiakim and Zedekiah, he ministered altogether, including the six months under the kings omitted, forty years in the midst of the theocracy. " Jeremiah was a member of a lowly family, and yet the Lord called him to a very important position as chief adviser of kings. God often chooses the weak, base, and despised things to confound the mighty. 1 Corinthians 1:27.