Funny thing is that many Bible interpreters say there is no contradiction between Jesus and Paul, but they don't obey a number of teachings the Lord gave to the Jews. They don't keep the Sabbath, they don't give away all their possessions, they don't sacrifice animals (Jesus told the man heald of leprosy to do animal sacrifice), they don't obey any scribe or Pharisee, etc.
Theologians write thousands of books saying Jesus and Paul preached the exact same thing, but they don't write a single line to justify why they actually follow Paul and not Jesus in some points of doctrine.
SO do you choose the Messiah or Paul if you feel this way? Certianly if you think they teach different do you have one you prefer?
These are some verses why I think the Messiah is the One shepherd.
John/Yahanan 10:16, "And I have other sheep that are not of this fold. I must bring them also, and they will listen to My voice. So there will be one flock, one Shepherd (4166 - poimén)."
John/Yahanan 14:6, "Yahshua proclaimed to him: I am the way, the truth, and the life; no man comes to the Father, except through Me."
John 5:31-32, “If I testify on my own behalf, my testimony is not trustworthy. There is another who testifies about me, and I know that the testimony he gives about me is true.”
John 5:39-40, “You search the Scriptures because you think that in them you have eternal life; and it is they that bear witness about me,
yet you refuse to come to me that you may have life.”
John 5:43, “
I have come in My Father's Name, but you do not follow Me. Let another come in his own name; him you will follow.”
Mat 24:35, “Heaven and earth may pass away, but
My words (teachings) will not pass away.”
John/Yahanan 7:16-17, “Yahshua answered, them, and said:
My doctrine is not Mine, but His Who sent Me. If any man will do His will, he will know about this teaching, whether it comes from YHWH, or whether I am speaking of My own authority.”