Erik Thoennes is a professor of theology and the chair of the theology department at Talbot School of Theology, Biola University as well as a pastor at Grace Evangelical Free Church in La Mirada, California. His wife Donna also teaches at Biola University as an adjunct professor.

Resource:

Church History in Plain Language (updated 4th edition)

by Bruce Shelley (Author)

https://www.amazon.com/Church-History-Plain-Language-Fourth/dp/1401676316