The need for a theology about the Day of Pentecost is seen by reflecting on how readily Christians misunderstand the nature of the church. For many people the church is a voluntary organization of individuals and exists primarily for reasons that relate to efficiency. Concerning worship, for example, it is tacitly suspected that in principle each Christian household could stay at home and have a pastor come to them to instruct them, administer the sacraments, and so on. But this would be too costly and probably would require more clergy than could be recruited. So it is more efficient for a number of households to contract together, and to establish a central meeting place and time at which the scriptures can be interpreted and the sacraments administered by someone trained in these tasks. Further, since most worship gives a central place to music, it is more effective to have a number of people sing with the support of a choir and a good musical instrument than for four or five people in a home to attempt to sing, probably unaccompanied. Because such a gathering is purely voluntary, people feel free to participate when they wish (particularly when they “need” to “get something out of it”), and to do otherwise the rest of the time.
A proper theology of the Day of Pentecost says a resounding “No!” to such popular ideas. The church is a community called together by the Spirit of the Risen One. It is not something we choose to do (and equally well could choose not to do), but something to which we are summoned. The Greek word for church (ekklēsia from which we derive “ecclesiastical”) means “those who have been called forth or summoned,” much as one is summoned to appear in a court of law. And we are called as a body of interdependent parts, not as separable individuals. The free-spirited individualism of our age is a manifestation of Babel, not Pentecost, as should be evident from the intransigent divisions and intractable conflicts such individualism fosters. The Risen One, who is present at all times and in all places, seeks to bind together by the action of the Spirit all things that have been wrongly separated. Participation therefore is not something we do on the basis of personal choice or need; participation in the Body of Christ is inherent in being Christian. The church, not the individual, is the irreducible unit of Christianity. Further, the church is to be a sign of the future: No matter how haltingly and imperfectly, the church seeks to enact in the present world the justice and grace that characterize the eternal reign of God. Therefore Christians participate in the church not so much for what they can get as for what they can give, for what they can offer as an alternative to the dominant ways of the world.
—Laurence Hill Stookey, Calendar: Christ’s Time for the Church, 76-77