In Paul’s Letter to the Romans, he is not condemning the human body, nor is he teaching that Christians should despise physical life. Rather, he is describing two fundamentally different ways of living—one centered on the self and one centered on God.
To live according to the flesh is to make oneself the ultimate reference point for life. In Paul’s language, “the flesh” refers not simply to our physical bodies but to our fallen human nature apart from God’s grace. It is life governed by self-interest, pride, fear, pleasure, power, resentment, or the endless pursuit of control. A person living according to the flesh may appear outwardly successful, moral, or even religious, but inwardly remains centered on “my will” rather than God’s will. Such a life gradually closes the heart to God and others. It promises freedom but often leads to anxiety, addiction, loneliness, and spiritual death because the soul was created for communion with God, not independence from Him.
To live according to the Spirit, on the other hand, is to allow the Holy Spirit to shape one’s thoughts, desires, decisions, and relationships. This does not mean becoming perfect overnight or never experiencing temptation. It means allowing God’s grace to transform the heart little by little. The Christian begins asking different questions: What is God asking of me? How can I love more faithfully? How can I forgive? Where is Christ leading me today? Life in the Spirit is characterized by humility, trust, charity, self-control, mercy, and hope. It is not merely about avoiding sin but about becoming more like Christ.
The difficulty is that living by the flesh feels natural, while living by the Spirit requires conversion. From our earliest years, we instinctively protect ourselves, seek comfort, compare ourselves with others, and satisfy immediate desires. Our culture often reinforces these instincts, celebrating self-expression and self-gratification as the highest goods. Because of this, many people mistake the impulses of the flesh for genuine freedom. They assume that following every desire is authentic living, when in reality it often becomes a new form of slavery.
Living by the Spirit, on the other hand, is also difficult to understand because God’s way often appears contrary to ordinary human logic. The Spirit teaches that greatness comes through service, that strength is found in humility, that forgiveness is more powerful than revenge, that generosity enriches more than accumulation, and that surrender to God brings deeper freedom than self-rule. These truths are not easily grasped because they must be learned through experience, prayer, and grace. The Spirit forms us gradually, often through trials, disappointments, and acts of daily fidelity rather than dramatic moments.
This transformation from living in the flesh to living in the Spirit is rarely instantaneous. It is the lifelong work traditionally called sanctification. Every act of repentance, every sincere confession, every choice to forgive instead of resent, every hidden act of charity, and every moment of faithful prayer is another step away from life according to the flesh and toward life in the Spirit. We discover that holiness is not simply avoiding evil but allowing Christ to live more fully within us.
Paul’s words today offer encouragement as much as challenge. Most believers recognize both realities within themselves. We know the attraction of selfishness, comfort, and pride, yet we also experience the quiet prompting of the Holy Spirit calling us toward something greater. The Christian life is lived in that tension. The measure of holiness is not that we never struggle with the flesh, but that we increasingly choose to cooperate with the Spirit. Each day presents countless opportunities to die a little to self so that the life of Christ may become more visible in us.