Charles Hodge on 2 Corinthians 5:21

"There is probably no passage in the Scriptures in which the doctrine of justification is more concisely or clearly stated than [this]. Our sins were imputed to Christ, and his righteousness is imputed to us. He bore our sins; we are clothed in his righteousness... Christ bearing our sins did not make him morally a sinner... nor does Christ's righteousness become subjectively ours, it is not the moral quality of our souls... Our sins were the judicial ground of the sufferings of Christ, so that they were a satisfaction of justice; and his righteousness is the judicial ground of our acceptance with God." (Hodge's commentary on 2 Corinthians (Carlisle, PA: The Banner of Truth Trust, n.d.), pp. 150-151)