Leaders

Cornerstone Church is an elder-led congregational church. That is, we have a church led by men who submit to the body of Christ (Ephesians 5:21; 1 Timothy 5:17-20), and we have a church body that submits to its appointed leaders (Hebrews 13:7, 17).  The biblical term “elder” is used interchangeably with other words like pastor, overseer, and shepherd throughout Scripture. Though we call our vocational elders “pastors” because they are supported financially to fulfill the role of elder, ultimately all elders are pastors and all pastors are elders (Acts 20:13-37; 1 Timothy 3:1-7; Titus 1:5-9; 1 Peter 5:1-4).

Matt Proctor serves as our teaching pastor. He met his wife Carrie at Iowa State University. They have 3 boys and a girl. Matt is a native Iowan who loves people, sports, and books (see his recommended reading list here). Matt serves as a volunteer chaplain for the Marion Police Department, board member for Serve the City, and as a steering team member for the The Gospel Coalition Iowa.


Pastor Gary Hoobler grew up in Illinois and is married to Patsy. They have three grown sons and a daugther still at home. For over 30 years, Gary has served local churches in worship ministry, and recently began at Cornerstone as an associate pastor dedicated to disciple-making and leadership development ministries.


Jeff Olson was born and raised in Minnesota. He and and his wife Kathleen (now with the LORD) helped start Cornerstone in 2001. Jeff has two adult children and one daughter still in high school (and a beloved dog Daisy). Jeff has been an air traffic controller for several decades. He is passionate to see one of the founding values of Cornerstone be a reality–“to help populate heaven.”


Randy Pospisil is married to Kim. They have been members of Cornerstone church since 2015. Randy is a native of Cedar Rapids and Kim is from Dallas, Texas. Randy is a graduate of the University of Iowa and Dallas Theological Seminary. He works at Leepfrog Technologies as a corporate trainer. Kim owns and operates Thrown Pottery Studio. They have two children: Lauren and Atticus. Kim serves on the worship team and Randy teaches children’s Sunday school.


David Gardner is married to Colleen. Together, they have served Cornerstone Church since Cornerstone’s earliest days. David recently retired from Collins Aerospace. Colleen homeschooled three children. David loves a good project, whether at home or at the church. Colleen pours into young hearts and young women.


Darrel Herschberger is married to Diane; they have been a part of Cornerstone for over 15 years. They have a son in college and a daughter finishing up at Linn-Mar High School. Darrel works for Collins Aerospace and heads up our Sunday morning prayer ministry. Diane volunteers for Linn-Mar schools and dedicates many hours to our little children’s care.