“This was a clear, unambiguous declaration that He was the Messiah. Some try to make the case that when Jesus said, “Son of Man,” they would’ve thought He meant that “humans” are lord of the Sabbath, but that cancels out the whole argument. Because the Pharisees were there saying, “We know the right way to keep the Sabbath,” and Jesus says, “No you don’t. Not by a long shot. You’ve ruined it with your human legalism. I’M telling you how to think about the Sabbath.”
Once again Jesus calls Himself by His favorite title, found in Daniel 7: The Son of Man. The One Who is in charge of everything, even of the Sabbath.
Not only is He once again claiming that title, He is suggesting that He is taking the place of the Torah. That is, of course, exactly what Jesus did. It’s not that the Torah was wrong – it was absolutely necessary and part of God’s unfolding plan. But Jesus came to fulfill the Law and to establish a new system. A new covenant where He decides how we relate to Him – what we do, how we do it, what it’s based on.”