Rashi on Numbers 24:22/רש"י על במדבר כ״ד:כ״ב

1כי אם יהיה לבער קין וגו׳ FOR IF THE KENITES WILL BE REMOVED etc. — Happy are you that you have firmly settled yourself in such strength, to which I have referred, so that thou will therefore never be driven from the world. For even if you will in the future go into exile with the Ten Tribes and be removed from the place where you had settled, what does it matter?

2עד מה אשור תשבך HOW FAR WILL ASSYRIA CARRY YOU AWAY CAPTIVE? Possibly as far as Chaloch and Chabor — this is not being driven from the world, but only being moved from place to place, and in the end you will return with the other exiles!