Christian clergy and laypeople frequently urge their churches to adapt to changing times, to be flexible for all settings and seasons. They rally practicing Christians to spread the Gospel in ways readily understood and accepted in todays circumstances. Despite these efforts, active church membership is declining in the United States, Canada, and much of Europe, especially for mainline denominations. Nonetheless, confronting an overall rise in secularism in the West, an encouraging number of congregations have experienced growth and development in attendance and diversity. Addressing this...