"With authority"

"But they were amazed at His teaching, for He taught as one having authority, and not as the scribes."  Mark 1:22

  When we first read Jesus' teachings in the New Testament,

the Christian tendency seems to be to think of Jesus as the originator of those teachings, that He's saying something that has never been said before.

  At least that's always been MY tendency.

  But as i become more acquainted with the Scriptures and indeed the writings of the old rabbis, i see quotes from them everywhere.  

  And i've heard this used to denigrate Jesus' teaching.  For example, The Golden Rule concept appears in cultures throughout the world, and was famously formulated by Rabbi Hillel a century before Jesus.

  But i don't see that as nullifying the teaching.  The crux of it is here:  "He taught as one having authority...."  Not someone quoting someone else, but an author might explain definitively what a passage means.

...the scribes taught by citing the opinions of various rabbis on different matters, appealing not to their own authority but to the authority of others.Christ, on the other hand, did not appeal to the authority of various rabbis when He instructed the people. Rather, as Matthew Henry comments, Jesus taught “as one that knew the mind of God, and was commissioned to declare it.” Mark does not record as much of Jesus’ instruction as the other gospels do, so let us consider passages such as Matthew 5:21–48 in order to get an idea of what it meant for Jesus to teach with authority. There, we read how Jesus contrasted His understanding of the old covenant Scriptures with the understanding of the scribes. He did not quote the teachings of the scribes and rabbis as binding, but He expected others to see His teaching as superseding theirs. In fact, He taught with the authority of God Himself.

          --from Ligonier Ministries

But they were amazed at His teaching, for He taught as one having authority, and not as the scribes.

 In fact, He taught with the authority of God Himself.

  Ah, the heart of the matter.  Who is this guy?  

  But that would lead us to other incidents in His life.  some things simply do not change.  

   Who is this guy?