8 Owe no one anything, except to love each other, for the one who loves another has fulfilled the law. 9 For the commandments, “You shall not commit adultery, You shall not murder, You shall not steal, You shall not covet,” and any other commandment, are summed up in this word: “You shall love your neighbor as yourself.” 10 Love does no wrong to a neighbor; therefore love is the fulfilling of the law. (Romans 13:8-10 (ESV)
Love is the fulfilling of the law. This isn’t saying that as long as we love that we fulfill the law. What it means is that love that cares for other people does not want to break the commandments. You can’t love your neighbor and steal his wife, you can’t even love his wife and do that to her. Of course, adulterers normally try to justify their adultery by appealing to their love for each other. At best this is a not guilty by reason of insanity argument. The Romans to whom this letter was written to actually considered erotic love to be a form of insanity. But that isn’t the love that Paul is speaking of here. Once again, here Paul speaks of agape love. This is the love that God has for all of mankind. It does no evil, it justifies no evil. This is the kind of love that causes one to recognize that it is love that writes the commandments as they are and so does no wrong. This is the love of God that that would rather die for you than to condemn you.