As I read through John Calvin’s Institutes of the Christian Religion this summer, occasionally I am sharing sections that strike me with particular force. Here is Calvin reflecting on the summary of the Christian life beginning in self-denial in order that the life of Christ might spring up within us by God’s grace.
Even though the law of the Lord provides the finest and best-disposed method of ordering a man’s life, it seemed good to the Heavenly Teacher to shape his people by an even more explicit plan to that rule which he had set forth in the law. Here, then, is the beginning of this plan: the duty of believers is “to present their bodies to God as a living sacrifice, holy and acceptable to him,” and in this consists the lawful worship of him [Rom 12:1]. From this is derived the basis of the exhortation that “they be not conformed to the fashion of this world, but be transformed by the renewal of their minds, so that they may prove what is the will of God” [Rom 12:2]. Now the great thing is this: we are consecrated and dedicated to God in order that we may thereafter think, speak, meditate, and do, nothing except to his glory. For a sacred thing may not be applied to profane uses without marked injury to him.
If we, then, are not our own [cf. 1 Cor 6:19] but the Lord’s, it is clear what error we must flee, and whither we must direct all the acts of our life.
We are not our own: let not our reason no our will, therefore, sway our plans and deeds. We are not our own: let us therefore not set it as our goal to seek what is expedient for us according to the flesh. We are nor our own: in so far as we can, let us therefore forget ourselves and all that is ours.
Conversely, we are God’s: let us therefore live for him and die for him. We are God’s: let his wisdom and will therefore rule all our actions. We are God’s: let all the parts of our life accordingly strive toward him as our only lawful goal [Rom 14:8; cf. 1 Cor 6:19]. O, how much has that man profited who, having been taught that he is not his own, has taken away dominion and rule from his own reason that he may yield it to God! For, as consulting our self-interest is the pestilence that most effectively leads to our destruction, so the sol haven of salvation is to be wise in nothing and to will nothing through ourselves but to follow the leading of the Lord alone.
Let us therefore be the first step, that a man depart from himself in order that he may apply the whole force of his ability in service of the Lord. I call “service” not only what lies in obedience to God’s Word but what turns the mind of man, empty of its own carnal sense, wholly to the bidding of God’s Spirit. While it is the first entrance to life, all philosophers were ignorant of this transformation, which Paul calls “renewal of the mind” [Eph 4:23]. For they set up reason alone as the ruling principle in man, and think that it alone should be listened to; to it alone, in short, they entrust the conduct of life. But the Christian philosophy bids reason give way to, submit and subject itself to, the Holy Spirit so that the man himself may no longer live but hear Christ leaving and reigning within him [Gal 2:20].
[From John Calvin, Institutes of the Christian Religion, edited by John T. McNeill (Philadelphias, PA: The Westminster Press, 1960), 689-690.]