Read Matt. 5:17-20
"While the smallest items of the law are significant for the kingdom of God and its righteousness, the righteousness of the scribes is said to have absolutely no affinity whatsoever with the kingdom (v.20). This is an important distinction to make. The mistake of the Pharisees was not concern for detail; it was externalism, humanistic traditionalism, and hypocrisy. Their kind of concern for detail led them to miss the whole genius of kingdom righteousness; hence they made God's law void by their own traditions."
-Greg Bahnsen in "Theonomy in Christian Ethics"