The Greatest Mistake in the Christian Life

The greatest mistake in the Christian life is this: we try to live it by our own strength. We try to think better, try harder, become more disciplined, and yet something never changes at the deepest level. Because Christianity is not about you improving your life. It is about receiving a new life.

Jesus said, “Unless one is born of water and the Spirit, he cannot enter the kingdom of God.” (John 3:5)

Christianity is not primarily a moral system, a philosophy, or a self-improvement plan. It is a new birth. God does not upgrade your natural life. He gives you a supernatural one. And that life comes from one source: the Holy Spirit.

The Holy Spirit Is the Source of Christ in Us

When the Holy Spirit gives this new birth, something astonishing happens. God does not simply help you live better. He places the very life of Christ within you. St. Paul says, “It is no longer I who live, but Christ who lives in me.” (Galatians 2:20)

This is not poetry. This is reality. The Christian life is not imitation. It is participation in the being and activity of God. Christ does not stand outside you as a model. He lives within you as your life. This is the goal of the entire spiritual life: that Christ should live in you. And this life comes from the Holy Spirit.

The Holy Spirit Forms and Directs This Life

Once the life of Christ is conceived within you at Baptism. It must develop. It must take shape. It must mature within us. St. Paul writes, “My little children, with whom I am again in travail until Christ be formed in you.” (Galatians 4:19)

Christ must be formed in you. And how does this happen? Paul tells us, “We all… reflecting the glory of the Lord, are being changed into his likeness from one degree of glory to another; for this comes from the Lord who is the Spirit.” (2 Corinthians 3:18)

The Holy Spirit is not only the giver of life. He is the one who forms Christ within you. And if He gives the life and forms the life, then He must also direct the life. “Since the Spirit is our life, let us be directed by the Spirit.” (Galatians 5:25)

The entire spiritual life can be summarized in one sentence: The Holy Spirit is forming Christ in you. Which means: The Christian life is not about getting your act together and trying harder. It is about learning to let the Holy Spirit transform us. It’s about docility and cooperation.

The Pattern Revealed in Mary, Jesus, and the Saints

Jesus, Mary, and the saints show us what it means to live by the Holy Spirit. At her Immaculate Conception, Mary was filled with the Holy Spirit. From that moment forward, every thought, every desire, every action was moved and carried by the Spirit.

At the Baptism of Jesus, the Spirit descends upon Him. Then Jesus, full of the Spirit, is led by the Spirit into the wilderness. When He returns in the power of the Spirit to Galilee and declares, “The Spirit of the Lord is upon me, because He has anointed me.”

Everything in the life of Jesus is inspired and carried forth by the Spirit. Before His Ascension, Jesus tells the Apostles, “You will receive power when the Holy Spirit comes upon you—and you will be my witnesses.”

Forty days later, at Pentecost, they are filled with the Holy Spirit. And we see the result. They are filled with the power of the Spirit, and they act with boldness. After Peter and John are arrested and released, they return to their companions. They pray, and the place where they are gathered is shaken. They are all filled with the Holy Spirit and speak the Word of God with boldness.

In every decisive moment, the coming of Christ into the world, the offering of Christ on the Cross, and the birth of the Church, the Holy Spirit is at work…and Mary is always there. Then comes Paul. He encounters Christ. He is baptized. He is filled with the Holy Spirit. From that moment on, everything about his life and mission flows from the power of the Spirit. He prays the same thing will happen in us, “May the Father give you the power through his Spirit for your hidden self to grow strong…Glory be to him whose power, working in us, can do infinitely more than we can ask or imagine.” (Ephesians 3:16, 20)

One reality runs through all of them: Everything begins with the Holy Spirit. Everything is sustained by the Holy Spirit. Everything bears fruit through the Holy Spirit. No one becomes like God by their own power. This is the work of the Holy Spirit. 

The Question We Cannot Avoid

Scripture reveals something unmistakable: The Holy Spirit gives the life of Christ. The Holy Spirit forms the life of Christ. The Holy Spirit directs the life of Christ. So, a question emerges, one we cannot avoid, if the Holy Spirit is doing everything…then what role does Mary play?

If the Spirit alone gives and forms Christ within us, then Mary would seem unnecessary. And yet…Mary appears everywhere. She stands at the beginning, at the Annunciation. She stands at the Cross. She stands at the birth of the Church, at Pentecost. The saints speak of her constantly.

The Church never stops turning to her. Why? St. Maximilian Kolbe gives us a clue: “The Blessed Virgin Mary exists so that the Holy Spirit is better known.” And “By looking at Mary, we see the Holy Spirit.”  But how can that be? How can a human person reveal the Holy Spirit?

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