He didn't. That is what the Messiah was expected to be by the Jews of the day, and it is evident from many of the things the disciples said or asked that they had a great deal of difficulty seeing Jesus without that presuppositional grid.
You imply that motivation for Peter in justifying your characterization of Peter's action in denying the Christ 3 times.
I didn't "imply" anything of the kind. The disciples were disillusioned by Christ's death and probably thought they had wasted three years of their life following a false Messiah.
None of what I have said is outside the mainstream interpretation of the Gospels. Don't blame me if you haven't done your homework.
That sure does not look mainstream to me. As far as homework is mentioned, homework is not needed when a simple demonstration of fact is sufficient to disprove an allegation. Matthew 16 is clear evidence that Peter had an idea that Jesus would rise from the dead. A complete refutation of your false assertion. Nuff said.