Islam will achieve this impressive feat by growing faster than every other world religion over the next forty years — by a lot. Pew calculates that the Muslim population will grow by 73 percent compared to 35 percent for Christians and 34 percent for Hindus.
Who is the leader of the Protestant Church?
Martin Luther, often called the father of Protestantism, fundamentally changed the Christian world through his force of will and new ideas. He tried passionately to reform the Catholic Church.