What does Jeremiah 1:3 mean?

God kept speaking to him during the reign of Josiah's son Jehoiakim, king of Judah, and all the way through the eleventh year of Zedekiah, another son of Josiah, until Jerusalem was taken and its people were exiled in the fifth month. Jeremiah 1:3 - Modern Text Bible

(Jeremiah's ministry spanned several kings and ended when Jerusalem was conquered and the people were taken away.)