Mark Dunagan has been preaching and teaching since his conversion to Christianity in 1979. He currently participates in the LIVE online program Answering Religious Error which is viewable on Facebook and YouTube. He has written commentaries on every book of the Bible and has over 20 years of audio sermons available online.
Facebook: Answering Religious Error
YouTube: Answering Religious Error
YouTube: Mark's Bible Study Channel
ISSUU: Mark's Bible Commentaries
Beaverton church of Christ: Mark's Sermons