Without a Doubt: Answering the 20 Toughest Faith Questions

by Kenneth Richard Samples

419 pages, Kindle Edition

Published March 20, 2026

About the author

Kenneth Richard Samples serves as a senior research scholar at Reasons to Believe (RTB). He earned a BA in social science with an emphasis in history and philosophy from Concordia University and an MA in theological studies from Talbot School of Theology. Before joining RTB, he worked as senior research consultant and correspondence editor at the Christian Research Institute and regularly cohosted the popular call-in radio program The Bible Answer Man.

Kenneth is the author of many books including Clear Thinking in a Messy World, Christianity Cross-Examined, and Classic Christian Thinkers. Additionally, he is an adjunct instructor of apologetics at Biola University and has spoken at universities and churches around the world.