Africa is the world’s fastest-growing continent, and Daniel Ajayi-Adeniran belongs to one of its most vigorously expansionary religious movements, a homegrown Pentecostal denomination that is crusading to become a global faith. In the course of just a few decades, the Redeemed Christian Church of God, founded in a Lagos shantytown, has won millions of adherents in Nigeria while building a vast missionary network that stretches into more than 100 nations.