(Ro 2:25-29)

Again, though only the word νόμος is used, there is a distinction between the law of men and the law of God, the letter of the law and the spirit of the law.

Physical circumcision (της σαρκός) represents the laws of men, the letter of the law; circumcision of the heart (του σώματος) represents the law of God, the spirit of the law.

We can also extend this teaching to a general principle: just because you have heard or, by some happenstance of history are the custodian of, something of value (e.g. the law of God), does not mean that you are worthy of that value; to be worthy, you must put the value into use as it was designed to do.