13 The name of the second river is Gihon. It is the same river that flows through the whole land of Cush.
Genesis 2:13 Cross References - WEB
Genesis 10:6
6 The sons of Ham were: Cush, Mizraim, Put, and Canaan.
Isaiah 11:11
11 It will happen in that day that the Lord will set his hand again the second time to recover the remnant that is left of his people from Assyria, from Egypt, from Pathros, from Cush, from Elam, from Shinar, from Hamath, and from the islands of the sea.