Therefore thus saith the LORD of hosts, the God of Israel; Jonadab the son of Rechab shall not want a man to stand before me for ever. Thus saith the Lord - Jonadab shall not want a man to stand before me for ever - His name shall ever be honorable, and his posterity shall enjoy my continual protection, and there shall never be found a time in which men of his spirit shall be wanting as patterns of genuine simplicity, filial obedience, purity of manners, and deadness to the world. True Christians may be considered as the genuine successors of these ancient Rechabites; and some suppose that the Essenes, in our Lord's time, were literally their descendants and that these were they who followed our Lord particularly, and became the first converts to the Gospel. If so, the prophecy is literally fulfilled: they shall never want a man to stand before God, to proclaim his salvation, and minister to the edification and salvation of others, as long as the earth shall endure.
Commentary on the Bible, by Adam Clarke [1831].