Chris R. Armstrong (PhD, Duke University) is associate professor of church history at Bethel Seminary in St. Paul, Minnesota. Armstrong contributed chapters to Singing the Lord's Song in a Strange Land (edited by Mark A. Noll and Edith L. Blumhofer) and to Portraits of a Generation: Early Pentecostal Leaders (edited by James R. Goff Jr. and Grand Wacker). He has written over seventy articles as the former managing editor of Christian History & Biography magazine, and he is a contributing writer to Christianity Today, Leadership Journal, Christian History, and other publications. He blogs regularly at www.christianitytodayblogs.com/history.