Albert Barnes Commentary Jeremiah 39:1

"And it came to pass when Jerusalem was taken, (in the ninth year of Zedekiah king of Judah, in the tenth month, came Nebuchadrezzar king of Babylon and all his army against Jerusalem, and besieged it;" — Jeremiah 39:1 (ASV)

Concerning "The Capture of Jerusalem": Most of the details given in Jeremiah 39:1-14 appear again (as indicated by a marginal reference), and some regard this passage as an interpolation. However, the external evidence from the ancient versions supports its authenticity.

Jeremiah 39:14 can be reconciled with Jeremiah 40:1-4 by remembering that Gedaliah had left Jerusalem and gone to Mizpah (Jeremiah 40:6), a nearby city. Since he was not at home to protect the prophet, it is highly probable that Jeremiah, along with the main body of captives, was brought to Ramah in chains.