In "Doctrinal Discussion" Omar Lee writes:
Hardly any orthodox Christian will deny that a person who is a Christian should be in a relationship with Christ. What that relationship is may draw widely differing doctrines. Perhaps the two that are most often put forward are these: 1. We are “in Christ.” Therefore, God sees only the righteousness of Christ, and we are accepted by God no matter how we live after being accepted through faith in Christ. 2. Others contend that, while we are “in Christ,” we must also have “Christ in us.” This teaching conforms more closely to the Scriptures. Romans 6:1 asks the question, “Shall we continue in sin, that grace may abound?” The following verse gives the emphatic answer, “God forbid. How shall we, that are dead to sin, live any longer therein?”
See your Adult Insights for the conclusion of Dr. Lee's thoughts.
Source: Studies in Romans: Adult Teacher's Insights, page 32.