11 Not only is this so, but we also boast in God through our Lord Jesus Christ, through whom we have now received reconciliation.

Read Romans 5:11 Using Other Translations

And not only so, but we also joy in God through our Lord Jesus Christ, by whom we have now received the atonement.
More than that, we also rejoice in God through our Lord Jesus Christ, through whom we have now received reconciliation.
So now we can rejoice in our wonderful new relationship with God because our Lord Jesus Christ has made us friends of God.