Owe no man anything, but to love one another: for he that loves another has fulfilled the law.
All Commentaries on Romans 13:8 Go To Romans 13
Augustine of Hippo
AD 430
Paul shows that the fulfillment of the law is found in love, i.e., in charity. Thus also the Lord says that the whole law and prophets depend on these two precepts, the love of God and neighbor. So he who came to fulfill the law gave love through the Holy Spirit, so that charity might accomplish what fear could not.