What is the relationship between the Jewish nation and Christianity?

Jews are God's voters, and God reveals himself to the world through them. No nation in the world is as magical as the Jews. When they are far away from God, God disciplines them through all kinds of sufferings. When they are close to God, how does God bless them? God once said to Abraham, All the world will be blessed in your name. But thousands of years of history in Israel have proved that it is impossible for people to completely abide by the law in the world. According to the requirements of God's justice, everyone will go to hell and be judged. But God is a merciful God. When justice and kindness conflict, God sent Jesus, the son of God, to be crucified instead of sinners to satisfy God's justice and grace. But Jews still don't believe in Jesus. They believed that the Savior wanted to glorify and revive Israel. But the kingdom of Jesus is spiritual.