Church growth integrates social and behavioral sciences to help determine how churches grow. For example, demographic studies are one of many church growth tools. While demography is not necessarily a biblical concept, neither is it unbiblical. Any tool or method that is not contrary to the Bible can be used in understanding church growth. Church growth, as a modern-day movement, began with the work of Donald McGavran in India. His book The Bridges of God, published in 1955, is the “birth certificate”