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 message series and discussion curriculum for churches and other ministries. The first edition of the curriculum was written by Mark Mittelberg and Garry Poole.  Lee Strobel contributed a couple of the messages and served as a consultant. In 2015, a pilot version of the curriculum was tested in about 30 churches, and in 2016, it was revised and officially released.

In early 2019, significant revisions to the content and layout of this curriculum–now called “Basic Questions”–were made under the direction of Dr. Richard Knopp, Program Director for R4D.  The program also converted to an entirely new website and created its amazing mobile app.  The website and mobile app are now used to distribute the curriculum in digital form.  The website offers access to special Leader Content through the use of a license key, and the mobile app gives curriculum participants access to the Adult and Youth Discussion Guides on their mobile devices with a license key.  The mobile app provides many articles and videos that can be easily searched and shared with others. It also allows users to submit their own questions.

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

In 2020, R4D is busy writing and releasing more curriculum options and developing a greater online video presence on Vimeo, YouTube, and in live webinars.

Search the AppBasic Questions CurriculumStrengthen Your Faith Curriculum

Learning Opportunities

for conferences, conventions, camps, schools, and churches


R4D provides a variety of learning experiences.  Multimedia presentations are given at conferences, conventions, camps, schools, and churches by Dr. Rich Knopp and Dr. Zach Breitenbach. Both Rich and Zach teach at Lincoln Christian University and offer a growing number of video resources and online classes that may be taken for personal enrichment or for college or seminary credit. To check out our curriculum options, click here.

Contact us about learning opportunities

Recommended Resources

for church leaders, teens, and young adults


While many good resources are available to help one understand and defend the Christian faith, Room For Doubt periodically updates THREE RESOURCES with items that are especially recommended.  These resources include books, websites, and videos along with brief descriptions of each item.

  • 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 organization, speak at your event, or address your questions, don’t hesitate to reach out.

Contact Us