The question of who qualifies as an evangelical and how many evangelicals exist worldwide continues to puzzle scholars, church leaders and mission researchers alike. That was the central theme of a Sept. 2 webinar hosted by the World Evangelical Alliance and released publicly Sept. 5, featuring two leading voices in global religious demography. Dr. Gina A. Zurlo, editor of the World Christian Database and a lecturer at Harvard Divinity School, and Jason Mandryk, longtime editor of Operatio...| The Roys Report