Senior Pastor

Rev. Joshua M. Knott

Joshua counts it a great joy and privilege to have been raised in a Christian home.  He made a profession of faith when he was young and gradually came to understand both the depths of his sin and the sufficiency and beauty of his Savior.  Around the same time the gospel 'came alive' he was drawn to the Word of God and to anyone he could share it with.  Sensing a call to ministry throughout his youth, Joshua pursued a Biblical studies major and Philosophy minor at Grove City College (B.A., 2001), and, after marrying his high school sweetheart, did his graduate work at Reformed Theological Seminary (M.Div., 2004).  After serving 11 years as an Assistant and then Associate Pastor in Newark, Delaware, the Lord called Joshua and his family to Cornerstone in August of 2017.  


Music Director

Dr. David Osterlund

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For more than 40 years, Dr. Osterlund has taught all ages - from kindergarten to seminary doctoral students. He has been a part of television and radio production and involved in Youth for Christ and Band Camping programs as well as four years spent in Ethiopia, working with Ethiopians, Europeans, and Americans. He currently works to equip and train incarcerated men for ministry within the prison system.  "Doc O" brings all of these experiences to his classrooms at CIU and in his work as Music Director at Cornerstone.


Children's Director

Mrs. Debbie Wenger

The daughter of missionary parents to Zimbabwe, Debbie grew up during a ten-year long civil war in that nation.  Such a childhood gave her many opportunities to see that God answers prayer and is at work today just as much as He has ever been.  Moving to the US in 1987 to go to college at Columbia Bible College (now CIU), she graduated with a BS in Elementary Education and an M.A. in TEFL (Teaching English as a Foreign Language) before marrying her husband, Mark

Debbie loves opening the Word of God with others, particularly children and young teens, and has used her training and her gifts in these capacities in every place she and her family have served: first at Cornerstone, while raising support to go out as trainers of cross-cultural workers in South Korea, then as a mother and teacher of her own children and those of others in her home, neighborhood, and then again at Cornerstone.  Rather than going out as career trainers of cross-cultural witnesses of the Gospel, the Wengers found God calling them to stay in Lexington, SC, where Debbie has continued to serve in the church as a teacher and volunteer throughout the past eighteen years. 

In 2016, God moved her husband out of the work he had been doing and back into cross-cultural work, as administrator of an organization sharing the Love of Christ where He is least known.  Prior to that change in Mark’s employment, however, Debbie had already stepped into interim leadership of the children’s ministry at Cornerstone.  She continues to delight in helping children and the adults and youth working with them, fall more in love with God by creatively attending to His Word, prayer, and worship.


Youth Director

Mr. Jimmy Sadler

Jimmy was born in Richmond, Virginia. He attended Columbia International University where he majored in Bible and Youth Ministry. He also did further studies in counseling. He began working at the college as a video producer, where he remained 4 years until heading into full-time youth ministry. His first assignment was at an EPC church in Highlands, NC, Community Bible Church. After serving there for a few years, he made his way to Louisville, Kentucky. He was the video producer at a church of 15,000, helping them establish video support for the services. After building a solid core volunteer staff, he went back into youth ministry in his hometown. In all, Jimmy spent nearly 20 years in youth ministry and several years in Church planting. He has always had a love for media as an open door for truth, and has been a photographer and designer for much of his life. His daughters Sophie and Kinsey both love Christ. They have traveled tens of thousands of miles together over the years and enjoy the adventure.  Jimmy currently writes a weekly faith column for a newspaper in Tennessee. His passion is communicating truth and finding creative ways to spark people's interest in following Christ.


Office Manager

Mr. Jay Williams


Financial Officers

David Mulholland

Vicky Wahab


SOAR Coordinator

Dawn Walters