John Gill's Exposition of the Whole Bible
Jeremiah 35:15
I have sent also unto you all my servants the prophets,.... One after another, ever since the times of Moses, to explain and enforce the laws given; a circumstance not to be observed in the case of the Rechabites; who yet, without such intimations, kept the charge their father gave them:
rising up early, and sending [them]; see Jeremiah 7:13;
saying, return ye now every man from his evil way, and amend your doings, and go not after other gods to serve them; all which were of a moral nature, and what were in themselves just and fit to be done; that they should repent of their sins, refrain from them, and reform their lives, and abstain from idolatry, and worship the one only living and true God, which was but their reasonable service; whereas abstinence from wine, enjoined the Rechabites, was an indifferent thing, neither morally good nor evil; and yet they obeyed their father in it, and when they had not that advantage by it, as is next promised these people:
and ye shall dwell in the land which I have given to you and to your fathers: a land flowing with milk and honey; and in which they might build houses, plant vineyards, sow fields, and possess them; which the Rechabites might not do:
but ye have not inclined your ear, and hearkened unto me; they did not listen to his precepts, nor obey them; they would not so much as give them the hearing, and much less the doing.