Albert Barnes Commentary Jeremiah 21:1

"The word which came unto Jeremiah from Jehovah, when king Zedekiah sent unto him Pashhur the son of Malchijah, and Zephaniah the son of Maaseiah, the priest, saying," — Jeremiah 21:1 (ASV)

By sending this embassy, Zedekiah acknowledged that Jeremiah held the same position in the kingdom which Isaiah had held under Hezekiah (2 Kings 19:2). Pashur and Zephaniah belonged to the party who were for resisting Nebuchadnezzar by force of arms.