In the Old Testament, God showed what kind of God he was through the history of Israel, and declared to the Israelites that he was their God and they were his people through his choice of Israel. Because the Old Testament mainly talks about the relationship between God and Israel, and does not emphasize that Jews are God's people.

In the New Testament, because of the redemption of Jesus Christ, he died on the cross for the sins of all, and he was resurrected three days later. Those who believe in him are his people, that is, the new people of Israel. That is to say, in the New Testament, God's people expanded from Israel to all mankind, which is also God's redemption plan for those he created and loved. Whoever is willing to rely on him is his man.

It can be seen that God's salvation plan is from the people of Israel to all mankind.