Jesus said this to the Pharisees who were unable to see Him and accept His work due to their limited knowledge of the scripture. Scripture is a written law that should be implemented in our day to day life. This is being implemented by two sources, one is with human mind and discipline, the other with God’s mind and discipline. Human mind has laid down some punitive elements to implement the law but God implements His law through unconditional love. Human mind uses a law to accuse but God uses the same law to rescue.