Thanks for that and I don't know what you guys are arguing about, but Jeremiah is describing new birth. It's perhaps the hardest part to explain about the Law, you can't keep the Law, not because there is a problem with the Law, but because you are by nature a sinner and opposed to the things of God, as Paul describes it, we 'suppress the truth in unrighteousness' (Rom. 1:18-20). That's why you, 'must be born again' (John 3:30), God either gives you a new nature or you remain a slave to sin. After watching this issue mulled over endlessly, it seems kind of obvious after a while.
Grace and peace,
Mark