Most congregations are about as easy to join as the Diners' Club. Not Washington's nondenominational Church of the Saviour. Before being accepted, prospective members must complete a two-year preparatory course in theology, covering everything from Bible study to Christian stewardship. Once admitted, they must promise to give 10% of their income (before taxes), devote at least 15 hours a week to church-sponsored activities, attend Sunday worship regularly, and spend some time each day in private meditation and the study of Scripture.
Unsurprisingly, the Church of the Saviour has never been much more...