Reference: Cush
Hastings
CUSH in OT designates Ethiopia, and is the only name used there for that region. It is the same as the Egyptian Kash or Kesh. Broadly speaking, it answers to the modern Nubia. More specifically, the Egyptian Kash extended southwards from the first Cataract at Syene (Eze 29:10), and in the periods of widest extension of the empire it embraced a portion of the Sudan. It was conquered and annexed by Egypt under the 12th Dynasty (c. b.c. 2000) and remained normally a subject country. After the decline of the 22nd (Libyan) Dynasty, the Cushites became powerful and gradually encroached on northern Egypt, so that at length an Ethiopian dynasty was established (the 25th, 728
See Verses Found in Dictionary
The second river is named Gihon; it is the one flowing around the whole land of Cush.
Cush became the father of Nimrod; he was the first to be a mighty man on the earth.
Then said Joab to the Cushite [an Ethiopian], Go tell the king what you have seen. And the Cushite bowed to Joab and ran.
And Sennacherib king of Assyria heard concerning Tirhakah king of Ethiopia, He has come to make war against you. And when he heard it, he sent messengers again to Hezekiah, saying,
There came out against Judah Zerah the Ethiopian with a host of a million [that is, too many to be numbered] and 300 chariots, and came as far as Mareshah.
And the Lord stirred up against Jehoram the anger of the Philistines and of the Arabs who were near the Ethiopians.
Woe to the land whirring with wings which is beyond the rivers of Cush or Ethiopia,
Can the Ethiopian change his skin or the leopard his spots? Then also can you do good who are accustomed and taught [even trained] to do evil.
Therefore all the princes sent Jehudi son of Nethaniah, the son of Shelemiah, the son of Cushi, to Baruch, saying, Take in your hand the scroll from which you have read in the hearing of the people and come [to us]. So Baruch son of Neriah took the scroll in his hand and came to them.
Now when Ebed-melech the Ethiopian [a Cushite], one of the eunuchs who was in the king's house, heard that they had put Jeremiah in the dungeon or cistern pit; and while the king was then sitting in the Gate of Benjamin,
Behold therefore, I am against you and against your streams, and I will make the land of Egypt an utter [plundered] waste and desolation [of subjection] from [northern] Migdol to [southern] Syene, even as far as the border of Ethiopia.
You [O degenerate children of Israel] are no more to Me than these [despised] Cushites, says the Lord. I brought up Israel out of the land of Egypt, but have I not [also] brought the Philistines out of Caphtor and the Syrians from Kir?