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
And the name of the second river is Gihon; it is the one that surrounds the whole land of Cush.
And the sons of Ham: Cush and Mizraim and Phut and Canaan.
And Cush fathered Nimrod. He began to be a mighty one in the earth.
And Joab said to Cushi, Go tell the king what you have seen. And Cushi bowed himself to Joab, and ran.
And when he heard it said of Tirhakah king of Ethiopia, Behold, he has come out to fight against you, he sent messengers again to Hezekiah, saying,
And Zerah the Ethiopian came out against them with an army of a million men, and three hundred chariots. And he came to Mareshah.
And Jehovah stirred up the spirit of the Philistines against Jehoram, and of the Arabians who were near the Ethiopians.
Woe to the land of whirring of wings, which is beyond the rivers of Ethiopia,
Can the Ethiopian change his skin, or the leopard its spots? Then you also may do good, who are accustomed to doing evil.
Therefore all the rulers sent Jehudi the son of Nethaniah, the son of Shelemiah, the son of Cushi, to Baruch, saying, Take the roll in your hand in which you have read in the ears of the people, and come. So Baruch the son of Neriah took the roll in his hand and came to them.
And Ebed-melech the Ethiopian, of the eunuchs in the king's house, heard that they had put Jeremiah in the pit (the king then sitting in the gate of Benjamin),
Behold, and therefore I am against you and against your rivers, and I will make the land of Egypt a complete waste, a ruin, from Migdol to Syene, even to the border of Ethiopia.
Are you not like sons of the Ethiopians to Me, O sons of Israel, says Jehovah? Have I not brought Israel up out of the land of Egypt? and the Philistines from Caphtor, and the Syrians from Kir?