Room For Doubt (R4D) provides a wide variety of resources to help youth and adults who have sincere questions and doubts about the Christian faith. It seeks to encourage questions, address doubts, and strengthen faith.

Meet Our Contributors


History & Development


Room For Doubt began in late 2013 as a grant-funded project at Lincoln Christian University.  Its first initiative was a six-week sermon and discussion series for churches and other ministries. The first edition of the curriculum was written by Mark Mittelberg and Garry Poole, while Lee Strobel served as a consultant and contributed a couple of the messages. In 2015, a pilot version of the curriculum was tested in about 30 churches. In 2016, it was revised and officially released.

In early 2019, significant revisions to the content and layout of this curriculum were made under the direction of Dr. Richard Knopp, who became the program’s Director in 2018. The message and discussion series was titled “Basic Questions.” Also in 2019, an entirely new website and mobile app were created.

In late 2019, R4D received an additional grant to continue its efforts and expand its impact. Dr. Zach Breitenbach was hired as the Associate Director and Hannah Brimner was added as a Technology Specialist and Administrative Assistant.

R4D continues to develop its social media presence and online video outlets like Vimeo and YouTube. It is currently working on a 24-week video lesson series for church high school ministries called “Learning to Love God in a World of Options.” 

Beginning on June 1, 2022, Room For Doubt was no longer formally connected to Lincoln Christian University, though it will continue its mission under the direction of Dr. Rich Knopp to provide valuable resources for individuals, churches, and parachurch ministries that will address questions and doubts in order to strengthen faith.

Learning Opportunities

for conferences, conventions, camps, schools, and churches


R4D provides a variety of learning experiences. Live presentations are given face-to-face and online. In addition, the program continues to develop a variety of curriculum options. To see our curriculum options, click HERE. To visualize where our curricula have been used, see our usage map HERE.

Contact us about learning opportunities

Recommended Resources

for church leaders, young adults, and teens


While many good resources are available to help one understand and defend the Christian faith, Room For Doubt periodically updates its recommended list of resources. They include the following:

  • Resources for Church and Christian Leaders
  • Resources for Teens and Young Adults
  • Resources on Science and the Christian Faith
Recommended Resources

We’d love the opportunity to talk with you!

If we can help you implement our resources in your church or ministry, speak for your event, or address your questions, don’t hesitate to reach out.

Contact Us