John Gills Exposition of the Bible Commentary - Isaiah 18:6
They shall be left, together unto the fowls of the mountains, and to the beasts of the earth ,.... That is, both sprigs and branches; with the fruit of them, which being unripe, are disregarded by men, but fed upon by birds and beasts; the fruits by the former, and the tender sprigs and green branches by the latter; signifying the destruction of the Ethiopians or Egyptians, and that the princes and the people should fall together, and lie unburied, and become a prey to birds and beasts; or... read more
Matthew Henry's Complete Commentary - Isaiah 18:1-7
Interpreters are very much at a loss where to find this land that lies beyond the rivers of Cush. Some take it to be Egypt, a maritime country, and full of rivers, and which courted Israel to depend upon them, but proved broken reeds; but against this it is strongly objected that the next chapter is distinguished from this by the title of the burden of Egypt. Others take it to be Ethiopia, and read it, which lies near, or about, the rivers of Ethiopia, not that in Africa, which lay south of... read more