What the Bible says about Supernatural Circumcision
(From Forerunner Commentary)
A supernatural circumcision by God has to take place—a circumcision made without hands. This implies a cooperative effort: God does His part, and we do our part. He makes possible the circumcision—for which we are responsible—by circumcising us supernaturally, so that we can yield to Him, put aside human nature, and make the choices to do the right thing.
John W. Ritenbaugh
The Covenants, Grace, and Law (Part Seven)