Therefore being justified by faith, we have peace with God through our Lord Jesus Christ:
All Commentaries on Romans 5:1 Go To Romans 5
John Chrysostom
AD 407
What does it mean to have peace? Some say that it means that we should not fall out with one another because of disagreements over the law. But it seems to me that he is speaking much more about our current behavior…. Paul means here that we should stop sinning and not go back to the way we used to live, for that is to make war with God. How is this possible? Paul says that not only is it possible, it is also reasonable. For if God reconciled us to himself when we were in open warfare with him, it is surely reasonable that we should be able to remain in a state of reconciliation.