Jeremiah 17:2 - Matthew Poole's English Annotations on the Holy Bible

This showed how inveterate they were in this sin of idolatry, that they taught it their children, and their children remembered their idolatrous altars and the groves where they were wont to worship idols by the green trees, as they did also upon the high hills; so their sin was derived from one age to another. Others think that the phrase rather expresseth their fondness of their idols, and think it should be read, as their children they remember, &c.; that is, they loved their idols and their idolatrous services as they loved their children, which also was true; yea, they that made their children pass through the fire to Molech loved them better than their children.