So, was the circumcision of the heart a totally new concept post-Deuteronomy 30? Or were OT Saints prior to Deuteronomy 30 circumcised in their hearts at regeneration?

__________________
Ryan Barnhart - Pastor of OGBC
Husband to a beautiful wife, Father to two beautiful girls
"But by the grace of God I am what I am." I Corinthians 15:10

"I confess to you, that if I can but live and die serving the Lord Jesus, it will make no difference to me whether I am eaten by Cannibals or by worms. And in the Great Day my Resurrection body will rise as fair as yours in the likeness of our risen Redeemer." - John Paton