Isaiah 30:25

There shall be upon every high mountain... — The picture of a golden age is continued. The mountains and hills, often so dry and barren, should flow down with rivers of waters, and irrigate the valleys. And this should coincide with the day of a “great slaughter,” perhaps of the enemies of Israel, perhaps also of the people themselves (judgment coming before the blessing), and of the fall of the “towers” in which they had put their trust. (Comp. Isaiah 40:4.) As before, man’s extremity was to be God’s opportunity. Possibly, however, the “towers” are those of the besiegers of the city.