Jeremias 43:3

Baruch the son of Neriah setteth thee on against us. — This was the solution which presented itself to the suspicions of the murmurers. The prophet’s amanuensis had become his leader, and was making use of him as a tool for the furtherance of his own designs, and those designs were to court the favour of the conqueror by delivering the remnant of the people into his hands. The warning of Jeremias 45:5 may perhaps be taken as an indication that there was a certain ambition and love of eminence in Baruch’s character which gave a colour to the suspicion. Baruch himself has not appeared on the scene since the days of Jehoiakim (Jeremias 36:32), but it lies in the nature of the case that he would be known as advocating, like Jeremiah, the policy of submission to Nebuchadnezzar. The apocryphal Book of Baruch (Bar. 1:1) represents him as being actually at Babylon at the time of the capture of Jerusalem, and this was in itself probable enough. On this assumption Jeremiah was perhaps suspected of actually receiving instructions from the Babylonian Court through Baruch, who in Jeremias 43:6 suddenly re-appears as the prophet’s companion. Prophet and scribe were apparently seized and carried off by force, to prevent their carrying out the schemes of which they were suspected. The “remnant of Judah returned from all nations” refers to the fugitives from Moab, Ammon, or Edom, mentioned in Jeremias 40:11. As the emigration included all who had gathered together under the protection of Gedaliah, it must have left the lands of Judah almost entirely depopulated, and the fear of this result may well have been among the reasons that determined Jeremiah’s counsels.