In this interview with Randy Harris, Richard Beck explains the often-irrational reactions to things (and people) we perceive as "unclean." He points out how practice is more important than preaching when attempting to address the resulting irrational behaviors. Dr. Richard Beck is department chair and professor of psychology at Abilene Christian University. Randy Harris teaches in ACU's Department of Bible, Missions, and Ministry and is spiritual director for the College of Biblical Studies.

This video is part of the Siburt Institute for Church Ministry's Contemporary Christian Conversations series, which features interviews about important issues in the context of personal stories. Find the rest of the series here:

• Black Rage, featuring Dr. Steven Moore and Randy Harris

• The Crossroads of Art and Faith, featuring Dan McGregor and Randy Harris

• Preaching through Pain, featuring Mike Cope and Randy Harris