Rashi on TanakhJeremiah 35

to the house of the Rechabites The sons of Jonadab the son of Rechab, and they were of the sons of Jethro.

the man of God The prophet of the Lord.

the keeper of the vessels Heb. שמר הסף. Jonathan renders: אמרכּלא (tresorier in French,) a treasurer.

but you shall dwell in tents in the deserts where you dwell. They had no share in the land since they were the children of proselytes.

And it came to pass when Nebuchadrezzar...came up Perforce we came to the city. Therefore, we are now dwelling in houses.