I did not say what you wrote in bold. Think of the story of Joseph and his 12 brothers, which I felt is the best analogy of what will go down for the Jews,
When the 12 first met Joseph, Joseph did not reveal himself to them, and none of them recognize him. You could say that Joseph deliberately hid himself from them.
But in their 2nd visit, he revealed himself to them as Joseph, they all accepted him after that.
I believe that will be what will happen to the Jews. Jesus will reveal himself to all the unbelieving Jews, and they will accept him. So ultimately, they still need to have faith in Christ.
What about those that already passed away? I have faith that God will not abandon them, they will still get a chance to see Jesus as their true Messiah, and they will accept him in the end. Otherwise God is not fulfilling the unconditional covenant he cut with Abraham regarding the Jews.