[maryz]

Yet here He tells the people to do what the scribes and Pharisees say. At other times, he "breaks" the laws, which He has the authority to do only because He is God, Who made the Law in the first place. The momentous difference is that now the new Torah is to be spread to all the nations. You might read the section on this (including the discussion of Rabbi Neusner's book) in the Pope's Jesus of Nazareth.

[PayNoAttentionManBehindCurtain]

Yet here He tells the people to do what the scribes and Pharisees say.

And yet He call them hypocrites and vipers! He knew their hearts, their motives.

At other times, he "breaks" the laws,

He did not break His own laws, He fulfilled them. He showed the extent of His laws. That an outward practice of them is not enough. After all, if we look at the laws in a deeper sense then just the outward appearance of what they say, they point to two things, Love God, and Love our neighbor, not just outwardly, but also with the heart.

The momentous difference is that now the new Torah is to be spread to all the nations.

"Now" it is to be spread...why is there evidence in the OT of people other then Jews being saved? Rahab the harlot was not an Israelite. She did not practice the Law, did she even "know" it? The key is she trusted God.