Now Shephatiah the son of Mattan, Gedaliah the son of Pashhur, Jucal the son of Shelemiah, and Pashhur the son of Malchiah heard the words that Jeremiah had spoken to all the people, saying,
"Thus says the Lord: 'He who remains in this city shall die by the sword, by famine, and by pestilence; but he who goes over to the Chaldeans shall live; his life shall be as a prize to him, and he shall live.'
References for Jeremiah 38:2
Thus says the Lord: 'This city shall surely be given into the hand of the king of Babylon's army, which shall take it.' "
Therefore the princes said to the king, "Please, let this man be put to death, for thus he weakens the hands of the men of war who remain in this city, and the hands of all the people, by speaking such words to them. For this man does not seek the welfare of this people, but their harm."
Then Zedekiah the king said, "Look, he is in your hand. For the king can do nothing against you."
So they took Jeremiah and cast him into the dungeon of Malchiah the king's son, which was in the court of the prison, and they let Jeremiah down with ropes. And in the dungeon there was no water, but mire. So Jeremiah sank in the mire.
References for Jeremiah 38:6