In the biblical narrative, God creates the human race who fall into sin and ran away from God. Eventually, God chose one man, Abram, to start all over again. God did not forsake the human race. He told Abram, "I'll make you a great nation; I will bless you and make your name great…" (Genesis 12:2)
According to Dr. Ed Hindson, the promise of God to the descendants of Abraham was uniquely a land promise. This promise is dependent on their obedience to God. Also, the promise to bless the seed of Abraham will come through the Davidic promise - that the son of Abraham and David will be the King, the Messiah. (Matthew 1)
This connects Jesus to the old testament story, that we understand the connection between Israel and the promises that are given to the people of God in the new testament. Jesus comes to offer the opportunity of the kingdom to the people.
God still have a plan for the people of Israel, a plan that He will fulfill in the last days when the Jewish people are brought back to the promised land.