Jeremiah 35:18-19

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.’ ”