Here, then, is the sum of the perfect law; this is the true circumcision of the heart. Let the spirit return to God that gave it, with the whole train of its affections. Unto the place from where all the rivers came, let them flow again. Other sacrifices from us he does not want; but the living sacrifice of the heart he has chosen. Let it be continually offered up to God through Christ, in flames of holy love. And let no creature be suffered to share with him: for he is a jealous God. His throne he will not divide with another: he will reign without a rival. Be no design, no desire admitted there, but what has Him for its ultimate object. This is the way where in those children of God once walked, who, being dead, still speak to us.

-John Wesley, “The Circumcision of the Heart”