How do we know that grace fulfills the law?

Grace allows us to fulfill the law as we are transformed by the Holy Spirit. Galatians 5:6 says, 'For in Jesus Christ neither circumcision availeth anything, nor uncircumcision, but faith which worketh by love.' This indicates that it is not through our own works that we keep the law, but rather through faith that expresses itself in love. This love works no ill to his neighbor, as stated in Romans 13:10, showing that love is the fulfillment of the law, which ultimately points us to Christ.