But he is a Jew who is one inwardly; and [true] circumcision is circumcision of the heart, by the Spirit, not by [the fulfillment of] the letter [of the Law]. His praise is not from men, but from God.
He received the sign of circumcision, a seal or confirmation of the righteousness which he had by faith while [he was still] uncircumcised—this was so that he would be the [spiritual] father of all who believe without being circumcised—so that righteousness would be credited to them,
“And the Lord your God will circumcise your heart and the hearts of your descendants [that is, He will remove the desire to sin from your heart], so that you will love the Lord your God with all your heart and all your soul, so that you may live [as a recipient of His blessing].
In Him you were also circumcised with a circumcision not made with hands, but by the [spiritual] circumcision of Christ in the stripping off of the body of the flesh [the sinful carnal nature],