18 And to the house of the Rechabites said Jeremiah: 'Thus said Jehovah of Hosts, God of Israel, Because that ye have hearkened unto the command of Jonadab your father, and ye observe all his commands, and do according to all that he commanded you;

Matthew Henry's Commentary on Jeremiah 35:18

Commentary on Jeremiah 35:12-19

(Read Jeremiah 35:12-19)

The trial of the Rechabites' constancy was for a sign; it made the disobedience of the Jews to God the more marked. The Rechabites were obedient to one who was but a man like themselves, and Jonadab never did for his seed what God has done for his people. Mercy is promised to the Rechabites. We are not told respecting the performance of this promise; but doubtless it was performed, and travellers say the Rechabites may be found a separate people to this day. Let us follow the counsels of our pious forefathers, and we shall find good in so doing.