Albert Barnes Commentary Jeremiah 39:14

"they sent, and took Jeremiah out of the court of the guard, and committed him unto Gedaliah the son of Ahikam, the son of Shaphan, that he should carry him home: so he dwelt among the people." — Jeremiah 39:14 (ASV)

Jeremiah was to be taken out of the court of the watch, and placed in the palace close by.

He lived among the people—that is, he was no longer in custody, but master of his own actions.