Our Leaders

Pastor James Tiefel
Pastor James Tiefel has spent 45 years as a pastor and a teacher of pastors. After ten years of pastoring a large Michigan congregation, he arrived in Mequon in 1985 to become a professor at Wisconsin Lutheran Seminary where he taught courses in worship and preaching. Since retirement from the seminary in 2020 Pastor Tiefel serves St. John's and Trinity Congregation on Mequon's west side in a semi-retired role. Pastor Tiefel and his wife Brenda have two married sons and six grandchildren. They reside in the Trinity parsonage at 11450 N. Wauwatosa Road.


 Vicar Mark Zondag
Raised in Libertyville, IL, Vicar Zondag is a senior student at Wisconsin Lutheran Seminary. Although a full-time student, he assists at both St. John's and Trinity and resides with his family in the St. John's parsonage. Because of his own college experience at the University of Minnesota-Twin Cities and because he spent an intern year working with students at Texas A&M in College Station, TX, Mark has a special interest in campus ministry and is working with students at Concordia University-Wisconsin, located near St. John's Church. He and his wife Sarah have two daughters, Esther and Anastasia.