The circumcision of the heart represents the work of God taking away those desires that leave us in bondage to sin. The circumcision also represents what God does to fill the house that has been swept clean. It must be both, for if the house is left empty, the lust of the flesh, the lust of the eyes, and the pride of life will come back to again be the substance of the desires for which we strive. Circumcision done by God discards the corrupt hope, the carnal hope with the incorruptible hope, the spiritual hope.
(KJV) Matthew 235 But all their works they do for to be seen of men: they make broad their phylacteries, and enlarge the borders of their garments, 6 and love the uppermost rooms at feasts, and the chief seats in the synagogues, 7 and greetings in the markets, and to be called of men, Rabbi, Rabbi.
a clear warning to the churches. What are we to watch out for?