Staff
Calvin Hamstra
Senior Pastor calvin@demottearc.com
Pastor Calvin began in September of 2026. He faithfully preaches and teaches God’s Word, shepherds the congregation, and provides spiritual guidance and care. Through prayer, biblical teaching, encouragement, and discipleship, Pastor Calvin helps the church grow in faith, serve one another in love, and share the hope of Jesus Christ with the community. Calvin is married to his wife, Lorena, and they have two sones, Josiah and Jonah.
Stacy Hoffman
Office Administrator office@demottearc.com
Stacy came to ARC in 2008 as our administrator. Stacy manages the day to day operations of the church office. She is married to her husband, Brian.
Brittney Liebbe
Church Program Director brittney@demottearc.com
Brittney began at ARC in 2024. She provides leadership and coordination across worship, communications, volunteer systems, congregational care, and community partnerships. Brittney is married to her husband, Greg, and they have two sons, Charlie and Wells.
Sam Sietsma
Church Custodian (part-time)
Sam began as custodian in 2012 and is responsible for the care and maintenance of our facility.
Consistory
Administrative Elders
Matt Kallemeyn
Bob Klemp
John Roorda
Tim Zylstra
Care Elders
Ryan Kohlhagen
Kyle Kohlhagen
Ron Owsley
John Spurgeon
Administrative Deacons
Brian Hanewich
Nathan Ooms
Scott Tysen
Mike Veld
Care Deacons
Jim Hoffman
Keith Jolink
Kevan Myers
Joe Steinke