The Promise ...

then, the Lord, your God, will bring back your exiles, and He will have mercy upon you. He will once again gather you from all the nations… Even if your exiles are at the end of the heavens, the Lord, your God, will gather you from there, and He will take you from there. And the Lord, your God, will bring you… and He will do good to you... (Deuteronomy 30:3-5)