When God doeth this - The eventual carrying away of the allies of Israel by Assyria presented itself to Balaam as the ruin of all peace and safety upon earth. One prediction was howerer, yet wanting, and is next given, namely, that the conquerors of the Kenites should fare no better than the Kenites themselves.
Related Commentaries of Numbers 24:23
Numbers 24:23
23 And he took up his parable, and said, Alas, who shall live when God doeth this!