Jamieson, Fausset and Brown on Jeremiah 32:2

2. in ... court of ... prison--that is, in the open space occupied by the guard, from which he was not allowed to depart, but where any of his friends might visit him (Jr 32:12; Jr 38:13, 28). Marvellous obstinacy, that at the time when they were experiencing the truth of Jeremiah's words in the pressure of the siege, they should still keep the prophet in confinement [Calvin]. The circumstances narrated (Jr 32:3-5) occurred at the beginning of the siege, when Jeremiah foretold the capture of the city (Jr 32:1; Jr 34:1-7; 39:1). He was at that time put into free custody in the court of the prison. At the raising of the siege by Pharaoh-hophra, Jeremiah was on the point of repairing to Benjamin, when he was cast into "the dungeon," but obtained leave to be removed again to the court of the prison (Jr 37:12-21). When there he urged the Jews, on the second advance of the Chaldeans to the siege, to save themselves by submission to Nebuchadnezzar (Jr 38:2, 3); in consequence of this the king, at the instigation of the princes, had him cast into a miry dungeon (Jr 38:4-6); again he was removed to the prison court at the intercession of a courtier (Jr 32:7-13), where he remained till the capture of the city (Jr 32:28), when he was liberated (Jr 39:11, &c.; Jr 40:1, &c.).