We have many opportunities for adults to plug in here at Thornapple!

If you have any questions about how to get connected, reach out to Pastor Tim Dieffenbach. 

Sunday School

Adult Sunday School meets September-May in the Sanctuary.​


November 13: Mission Partner Update: ICCF

ICCF Community Homes is a nonprofit housing corporation whose leadership is motivated by, and programs shaped by, its belief that all people deserve safe, clean, affordable housing. God has called us to seek justice in our community in response to the saving love of Jesus Christ, that others may see His love in action. ICCF is one of our local housing ministry partners. Ryan VerWys, President and CEO of ICCF, will be our presenter.


November 20: Mission Partner Update: Words of Hope

The mission of Words of Hope is to provide people both near and far with daily access to God’s Word. Brittany Aldridge, an Ambassador for Words of Hope, will come and provide an update about the ministry of Words of Hope locally and worldwide.

November 27: Advent Begins: Birth Narratives in the Gospels

Dr. Jennifer Holberg, Calvin University will begin our Advent series. She’ll be introducing the birth narratives in the various gospels. Dr. Holberg is the chair of the English Department and Co-director of the Calvin Center for Faith & Writing.

You can click on the corresponding icons to be brought to the organization website for more information.

Tin Wall
Women's Bible Study

The Story by Max Lucado & Randy Frazee


The Wednesday Morning Women’s Bible Study will read The Story, by Max Lucado & Randy Frazee. The group meets at 9:30 AM in Fellowship Hall.


If you would like to participate in this study, click on our contact button below. If you chose to order the book and study guide (study guide optional) through TCC, the cost is $5.00/book & $10/study guide. 

Book Study

"Unlearning God" by Philip Gulley


This book will be challenging for some, fascinating for others, but spiritually thought provoking for all. Gulley was raised by a Baptist father and Roman Catholic mother; he had Jehovah Witness neighbors and several other formative religious experience that shaped him into the Quaker pastor he became. The book challenges readers to examine why they believe what they believe and allows one to wrestle with the religious structures that have shaped us.


Participants should be prepared to attend regularly, to read the assigned chapter(s) in advance, and be committed to learning from each other even when we may disagree. The study will begin at 7 PM on October 5 and the fall session ends November 16.


Adults are invited to participate in the Choir and in the Praise Band​.

Choir rehearsals are Wednesdays at 7 PM in the Sanctuary. The choir meets weekly from September-May, and several times during the summer.

Praise Band is always looking for more talented individuals who can sing and play instruments to join the rotating band!

For more information, contact Catharina Matthews (Choir Director) or

Michelle VanGeest (Director of Music).

Ongoing Activities

Thornapple offers a variety of groups, clubs and events throughout the year. For more information, get in touch with Pastor Tim.​

  • Women's Bible Study

  • God Winks Gathering

  • Pastors Lunch Bunch

  • Men’s Breakfast Gatherings

  • Threads of Love

  • Book Club 

  • Volunteer Teams

  • Dinner Groups

  • Servant's Picnics

  • Adult Choir

  • Praise Band

  • Wednesday Noon Prayers