Jeremiah 35:16-19

16The descendants of Jehonadab son of Rekab have carried out the command their forefather gave them, but these people have not obeyed me.’

17“Therefore this is what the Lord God Almighty, the God of Israel, says: ‘Listen! I am going to bring on Judah and on everyone living in Jerusalem every disaster I pronounced against them. I spoke to them, but they did not listen; I called to them, but they did not answer.’ ”

18Then Jeremiah said to the family of the Rekabites, “This is what the Lord Almighty, the God of Israel, says: ‘You have obeyed the command of your forefather Jehonadab and have followed all his instructions and have done everything he ordered.’

19Therefore this is what the Lord Almighty, the God of Israel, says: ‘Jehonadab son of Rekab will never fail to have a descendant to serve me.’ ”