Dr. Owen Strachan discusses the concept of no condemnation for Christians. He focuses on two main themes: no condemnation from the law and no condemnation from the devil. Strachan emphasizes that Christians are not saved by works of the law, but through the finished work of Jesus Christ. He also highlights the ongoing ministry of condemnation by the devil and encourages listeners to look to the cross for assurance of God's love and forgiveness.