Charles Ellicott Commentary Deuteronomy 4:25

"When thou shalt beget children, and children`s children, and ye shall have been long in the land, and shall corrupt yourselves, and make a graven image in the form of anything, and shall do that which is evil in the sight of Jehovah thy God, to provoke him to anger;" — Deuteronomy 4:25 (ASV)

Shall have remained long. —Literally, shall slumber— a very suggestive expression. Prosperity often sends true religion to sleep, and brings conventional, or fashionable, religion in its place.