What might former Jews who have come to Jesus have to say about their reasons why?

What does “Messianic” Jew mean?
From Christianity Today website : The term messianic is related to the Messiah, Jesus Christ. Messianic Jews have accepted Jesus as the Promised Messiah from Hebrew Scripture. While Jews are still waiting for the promised Messiah to come and save all who believe, Messianic Jews believe that has already been fulfilled through the death and resurrection of Jesus Christ. Many Jews believe Jesus was a historical figure, but not the Chosen One sent to save the world from their sin.