You know if you think about it, what a heavy burden it must have been to go up against the rock stars of the day. These in ancient times were the Pharisee, the Sadduccees and the high priest. That would be like going up against the President, Oprah, and Joel Osteen, TD Jakes of the day. So you have Jesus who really lets all of these guys know that the laws that were written cannot be upheld by all the people all of the time. That through him(Jesus) men & women will be able to follow the law the best way they could. And if they falter, all would be forgiven through him, because he is the son of God and that was his mission. After Jesus was killed, his disciples had the daunting task of continuing his teachings, performing miracles and receiving harsh punishments for mentioning Jesus name in their teachings. But through it all God's word prevailed and it is still taught today some three thousand years later.
Ephesians 1:13-14 In him
you also, when you heard the word of truth, the gospel of your
salvation, and believed in him, were sealed with the promised Holy
Spirit, who is the guarantee of our inheritance until we acquire
possession of it, to the praise of his glory.