According to Jeremiah, God wanted to show the people an important lesson by bringing a family into a special room in His house. This room was next to important leaders and above another important person's room, showing how important this message was.
Jeremiah 35:4: And I brought them into the house of the LORD, into the chamber of the sons of Hanan, the son of Igdaliah, a man of God, which [was] by the chamber of the princes, which [was] above the chamber of Maaseiah the son of Shallum, the keeper of the door: [door: Heb. threshold, or, vessel]
These verses contradict Jeremiah 35:4 where the Rechabites are brought into a chamber of the house of the Lord because in verses 6-7, the Rechabites say they do not drink wine nor have any permanent dwellings, following their ancestor Jehonadab's command.
Jeremiah 35:6-7: But they said, We will drink no wine: for Jonadab the son of Rechab our father commanded us, saying, Ye shall drink no wine, [neither ye], nor your sons for ever: