The early Jews believed that the coming of the Messiah would bring God's judgement against evil. They were correct. So right they couldn't see the truth of what was happening right before their very eyes.
The Jews of Jesus' time “knew” that anyone who was crucified, or “hung on a tree” was under God's curse. To be under God's curse AND to be the Messiah seemed an unresolvable conundrum.
In reality, Jesus came to our planet to bear the judgement and wrath of Creator God against evil and those on the side of evil. Jesus, our Messiah, our Saviour came to die in our place.
What kind of a person would push away, or reject that kind of an offer?