Meet Our Staff

Senior Pastor
Bob Grysen
Pastor Bob is the husband of his amazing wife Sherri. Together they have served at Cornerstone since 1995. Pastor Bob and Sherri have 4 children and 4 grandchildren. He loves sweets, hunting pheasant, Sherri’s Thanksgiving dinner, and the Lord. Bob’s education includes a Bachelor of Religious Education from Reformed Bible College, a Master of Divinity from Western Theological Seminary and a Doctor of Ministry from Trinity Evangelical Divinity School.
Worship & Communications Director
Josh Helm
Josh is a recent alumni of Olivet Nazarene University with a degree in Pastoral Ministry. He has been working at Cornerstone since the Summer of 2020. He is married to his wife Morgan. He likes music, improv comedy, the Marvel Cinematic Universe, and his dog Zemo.


Discipleship Director
Nathan Gonzalez
Nathan is a graduate student at Moody Theological Seminary from Wisconsin. He loves to serve and enjoys every opportunity he has to teach at Cornerstone. Passionate about the Word of God, he also loves seeing people dive deeper in scripture and learn more about God! Nathan is engaged to his fiancé Carlee, and enjoys reading, hanging with friends, sushi, and trying new experiences!
Children's Ministry Director
Amy Corzine
Amy is happily married with five amazing kids, four sweet pups, three adorable cats, and one handsome horse. She absolutely loves serving Jesus and Cornerstone Church in Children’s Ministries. She believes two of God’s greatest creations are kids and animals.

Preschool Director/Teacher
Jamie Mather
Jamie is married to her wonderful husband Nick and they have three beautiful children: Kaylee, Wyatt and Layla. Jamie has been working in childcare for 19 years and enjoys being a part in children’s growth and development and could not find a greater joy in any other career.
