Zack pastors at Riverside Church and is the co-founder of Sage Christianity with his wife Jessica. He formerly served as Director of Homiletics and Scholar-in-Residence at the Francis Schaeffer Institute (FSI) at Covenant Seminary. A writer and pastor, Zack’s books include Recovering Eden: The Gospel According to Ecclesiastes, Spurgeon’s Sorrows: Realistic Hope for those who Suffer from Depression, Preaching to a Post-Everything World, and The Imperfect Pastor.

Jessica is the Co-founder of Sage Christianity with her husband, Zack. She serves as a Visiting Instructor for the Francis Schaeffer Institute, and as an Attorney for the Missouri Court of Appeals.

Mark is an evangelist and apologist serving as the Executive Director of Sage Christianity. He previously served as the Director of the Francis Schaeffer Institute (FSI) at Covenant Seminary after pastoring in the United States and in his home country of Australia. Mark also spent numerous years working with L’Abri Fellowship, a ministry begun by Francis and Edith Schaeffer. Mark and his wife Terri are well known in our city for the way they open their lives and their home to those who question God, are done with church, feel at a loss with faith or who feel curious but suspicious about Christianity.

Jess serves as the Media and Design Coordinator for Sage and is also a contributing writer. She seeks to create a safe space through her writing for those who have experienced religious trauma, are doubting, or are wondering about Jesus again.