Jeremiah 1:3 - Matthew Poole's English Annotations on the Holy Bible

It, viz. the word of the Lord, as Jeremiah 1:2, came also in the days of Jehoiakim; called at first by Josiah, Eliakim, 2 Kings 23:34. Jehoahaz and Jehoiachin, whereof the former reigned before him, 2 Kings 23:31, the latter succeeded, 2 Kings 24:8, are conceived not to be mentioned, because they reigned but each of them three months, and therefore not considerable, the Scripture often taking little notice of a small time, as of six months: compare 2 Samuel 5:5, with 1 Kings 2:11: see Jeremiah 1:2. Zedekiah; of whom read 1 Chronicles 3:15,16. Unto the carrying away of Jerusalem captive, i.e. the inhabitants of Jerusalem, namely, under Zedekiah, 2 Kings 25:11, during all which time, things standing in that state and condition, Jeremiah prophesied. This doth not terminate the time of his prophecies, for he prophesied also both in Judea, and in Egypt afterwards; but only relates to what he prophesied while the city and temple were standing, the rest seeming rather to be added as a supplement, than to be reduced unto this general title of his prophecies. In the fifth month, viz. of that present year; for though the year end not at the fifth month, yet it might end the year of Zedekiah's reign, because he might begin his reign at the fifth month of the year.