You kept saying one thing and then change to say something else. It seems to me You don't stick with your words. You stated You don't believe in the "Messiah" Jesus is the Messiah. So the saying is if you don't believe in the Messiah then You don't believe in Jesus.
No you are not listening what I was saying, I already told you that I don't know if Jesus was telling the truth which doesn't mean that I don't believe him. For example, if my brother told me he got a million dollar while he didn't buy anything for long time, should I refuse to believe him? Or what if he was telling the truth? I don't know till I ask him face to face, "May you proof your million of dollars?", if he prove it then I would believe him, if he prove nothing then I don't know what to say. Get my point?