Judism is a complete religion. Jews are the chosen people of God. That was true in Jesus's time, and it's still true today. It has not changed.
Jews were the chosen people....that's the people God sent his only SON, Jesus to....to tell them the Good News of the Kingdom of heaven. "No one comes to ME unless the FATHER sends them."
Have you ever thought about the early Christians??? 10 out of the 11 apostles were martyred?? Beheaded....Crucified upside down...etc. Do you think these people followed Christ because it was EASY? They all saw it as the Prophets words coming to fulfillment...
An atheist libertarian (who is also part Jewish) told me that Spinoza said that there can be more than one chosen people, and that even if someone is chosen, they might only be chosen for a specific task at a specific period in history. I thought that was an interesting perspective.