By 2050 , the Christian population is expected to exceed 3 billion .
According to 2012 Pew Research Center survey if current trends continue , Christianity will remains the world 's largest religion by year 2050 .
By 2050 , the Christianity population is expected to exceed 3 billion .
According to 2012 Pew Research Center survey if current trends continue , Christianity will remains the world 's largest religion by year 2050 .