“It is important to note that Paul here does not speak of doing or keeping the law, but rather fulfilling it. Paul’s point here is that by serving others through love, believers are able to live out the kind of life devoted to God that the Mosaic law commanded but could never
produce in a person’s life … What the Mosaic law aimed for but could never produce, believers are able to experience because Jesus Christ fulfilled the law on our behalf and now lives in us by his Spirit to
empower us to love others with the love he has first shown to us. We must use our freedom to love and serve others because Jesus Christ used His freedom to love and serve us. We fulfill for others what He has already accomplished for us.”