our staff

  • Dr. Cal Aardsma

    Pastor of Administration and Visitation

    Pastor Cal has been part of Bethel since 2006. He and his wife Sandy have 4 children and six grandchildren. He enjoys travel, sports and family.



  • Sarah Rinkenberger

    Director of Youth Ministries

    Sarah has been with Bethel since 2007. She is originally from Minnesota and a graduate of Dordt College. She recently got married in June to Mark. She appreciates good literature, enjoys writing and anything dark chocolate.


  • Debbie Ohm

    Director of Children's Ministries

    Debbie Ohm has been a member of Bethel since 1998 and on staff since 2012.  She has a husband named Ryan and 3 children named Austin, Kate and Allison.  She enjoys camping, traveling and photography.


  • Judi Byma

    Worship Coordinator

    Judi Byma has been involved in the music and worship of Bethel since 1992, with a short break from 2000 to 2004.  She is married to Bill and together they have a daughter, two sons, a daughter-in-law and two granddaughters.  She loves to sing and play piano.


  • Lois Fennema

    Administrative Assistant

    Lois is a long-time member of Bethel and joined the staff in 2008. She is married to Jeff and they have 3 children - all of them married, and are blessed with 3 grandchildren. Lois enjoys traveling, sports, bike riding, walking, cooking, baking and kids of all ages.


  • Julie Tambrini


    Julie has been a member of Bethel for several years and joined the staff in 2018.  Julie and her husband Aaron reside in Dyer and have 4 children.  She enjoys time spent with family, road trips, taking photos and cheering on the Cubs. 


  • Tim Groenewold


    Tim has been serving as the comptroller at Bethel since 2009.  He and his wife Kim and two children reside in Dyer, Indiana.   Tim owns a small business and loves to travel and spend time with his family.


  • Dave Schurman

    Head Custodian

    Dave has been with Bethel since the fall of 2011. He and his wife Janice have two children, Katelynn and Joshua.  He enjoys camping, hiking, and volunteers for the Humane Society.


  • Leroy Noble

    Assistant Custodian

    Leroy has been a member of Bethel for many years and joined the staff in 2016.  He and his wife Edith enjoy spending time with their kids and grand kids.