When God gave the Law to Moses it produced a kind of sanctimonious cockiness in many 'I'm OK, I keep the Law' but when God followed it up by sending the Christ it produced more certainty about what is right to do in changing our ways and learning a new way (like quitting our lying because it is evil and speaking only truthfully as much as we can like learning a new language and ditching our old language). So we need to keep at it with living by this certainty Jesus gives; just because many do not share this certainty it does not mean we should neglect to live it out in our lives. We have a duty to God to let our actions live out the certainty God has placed within us regarding what is true and right.
