Koa
Koa appears once in the text, in Ezekiel's oracle against Oholibah, where it stands among the eastern peoples summoned against her.
In the Muster Against Oholibah
The name occurs in a list of military allies and overlords from the east who will come against Jerusalem under the figure of Oholibah: "the Babylonians and all the Chaldeans, Pekod and Shoa and Koa, [and] all the Assyrians with them; desirable young men, governors and rulers all of them, princes and men of renown, all of them riding on horses" (Ezek 23:23). Koa is grouped with Pekod and Shoa, and the whole roster is qualified by "all the Assyrians with them," placing the people in the orbit of Mesopotamian power.