An unfulfilled covenant is null and void. The old testament is a cautionary tale of tragedy for the isrealites failure. Time and again they fail God and are punished. Eventually he is done. The new testament is far down the road. Its a new story. The story of the new covenant The jews of the new testament are NOT the Israelite of the old testament. They were conquerors of Israel's failed state and usurped their cultural identity of the "chosen" people.