Set apart, then made new
In Scripture, “holy” first means set apart for God, the way the vessels of the temple were reserved for sacred use. So the New Testament can address ordinary, visibly imperfect congregations as “saints”, holy ones, from day one: they belong to God already. But belonging is meant to blossom into likeness. “Be holy, for I am holy,” God says, and Paul prays that believers will be sanctified “through and through”. Sanctification is that second, lifelong movement: becoming in practice what you already are by grace.
Not the entrance fee
The order matters enormously. Christians are not made acceptable to God by becoming good; they become good because God has already accepted them in Christ. Get this backwards and faith curdles into anxiety or performance. Get it right and obedience becomes a response of gratitude. As our guide to justification explains, the verdict comes first; the transformation follows from it, as warmth follows from sitting by a fire.
God's work and ours
Whose job is sanctification? Paul answers with a deliberate paradox: “work out your own salvation with fear and trembling, for it is God who works in you.” The power is entirely the Spirit's; the participation is genuinely ours. The old writers spoke of the “means of grace”, the ordinary channels through which the Spirit does his renovating:
- Scripture. Regular, unhurried Bible reading reshapes the mind. See our guide on how to read the Bible.
- Prayer. Honest daily conversation with God, including confession.
- Worship and sacrament. Weekly gathering, and Christ's own gift of communion.
- Fellowship. Other Christians, who encourage, correct and occasionally infuriate us into patience.
- Service and trial. Acts of love, and hardships borne with grace, do more sanctifying than comfort ever has.
How the traditions describe the journey
Reformed teaching pictures gradual growth with ongoing struggle: the believer remains a forgiven sinner making real progress until glory. John Wesley, whose field-preaching reshaped eighteenth-century Britain, dared to speak of “Christian perfection”, by which he meant not flawlessness but a heart so filled with love for God and neighbour that sin loses its throne; the Methodist and holiness churches inherit that hopeful note. Catholic spirituality maps the journey through purgation, illumination and union, guided by spiritual directors and the examples of the saints. The Orthodox speak of theosis, a lifelong participation in God's own life. The vocabularies differ; the destination, Christlikeness, is recognisably the same.
What progress actually looks like
Rarely dramatic, and rarely linear. The realistic signs are quieter: a quicker conscience and a quicker repentance; old resentments loosening; honesty where there used to be image management; generosity that no longer feels heroic. One paradox is worth naming: the holier people become, the less holy they feel, because light shows up dust. If you meet someone advertising their own sanctity, be politely sceptical. If you meet someone kind, unhurried and free of malice, you have probably met the real thing, and Britain's congregations contain more of them than headlines suggest.
Common discouragements
- “I keep failing at the same point.” So did the apostles. The remedy is not despair but confession, and sometimes the honest help of a mature Christian.
- “Nothing seems to be happening.” Compare yourself with your former self over years, not weeks. Oaks are slow.
- “I can do this alone.” Nobody can. Sanctification is a team sport played in ordinary congregations.
Where growth happens
The Spirit sanctifies people in community: through sermons that sting helpfully, friendships that hold us steady, and bread and wine received month after month. If you want to grow, plant yourself. Our directory can help you find a church near you where the long, good work can begin.