This membership in the Church goes beyond institutional membership. It is membership in the Body of Christ. It is organic, as the arm is a member of the body, or the branch a member of the vine. It is quite different from being a member of a club. To the Christian Life.
Christian conversion is in one sense an unfolding into depth, height and breadth.
People may initially relate themselves to the Church because of a lovely building, a sentimental feeling, an intellectual belief, a parish program of music or social outreach, or the warmth and friendliness of the priest and congregation. God will use any such starting point for the journey. But it is just a starting point. The end is maturity and holiness. The Christian life is a life of transformation.