And after threescore and two weeks shall Messiah be cut off,
but not for himself:
Daniel 9:26
What is the purpose for the Messiah to be "cut off"? (Let the Bible interpret the Bible)
For a substitution on our behalf...
But he was wounded for our transgressions,
he was bruised for our iniquities:
the chastisement of our peace was upon him;
and with his stripes we are healed.
Isaiah 53:5