Are ye not as children of the Ethiopians unto me, O children of Israel? saith the LORD. Have not I brought up Israel out of the land of Egypt? and the Philistines from Caphtor, and the Syrians from Kir? Children of the Ethiopians - Or Cushites. Cush was the son of Ham, Genesis 10:6; and his descendants inhabited a part of Arabia Petraea and Arabia Felix. All this stock was universally despised. See Bochart.
The Philistines from Caphtor - The island of Crete, the people of which were the Cherethim. See, 1 Samuel 30:14; Ezekiel 25:16; Zechariah 2:5.
The Syrians from Kir? - Perhaps a city of the Medes, Isaiah 22:6. Aram, from whom Syria had its name, was the son of Shem, Genesis 10:22. Part of his descendants settled in this city, and part in Aram Naharaim, "Syria of the two rivers," viz., Mesopotamia, included between the Tigris and the Euphrates.
The meaning of the verse is this: Do not presume on my having brought you out of the land of Egypt and house of bondage, into a land flowing with milk and honey. I have brought other nations, and some of your neighbors, who are your enemies, from comparatively barren countries, into fruitful territories; such, for instance, as the Philistines from Caphtor, and the Syrians from Kir.