Rashi on Isaiah
Woe Concerning Hoshea and the ten tribes who went down to Egypt for aid, who sent emissaries to So, king of Egypt (II Kings 17).
Ibn Ezra on Isaiah
אוי ═ הוי Woe!1See c. i., Note 13.—Woe unto those that go down to Egypt, that do not see the deliverance that is coming, and go thither in order to be saved, but will in fact perish there.