“O land of whirring wings!
Beyond the rivers of Ethiopia!
They send ambassadors
By the Nile River
In vessels of papyrus
On the waters.
Go!
You swift messengers!
Go to a tall nation!
Go to a smooth nation!
Go to a people
Feared near and far!
Go to a mighty nation!
Go to a conquering nation!
Go to a nation
Whose land the rivers divide!”
Quite often Egypt and Ethiopia were united together. The older name of Ethiopia was Kush, one of the older sons of Ham, the son of Noah. Thus there was some relationship with them. Here it seems that they have swift ambassadors that use papyrus paper like vessels to deliver messages. The reference to a tall, smooth, mighty, and conquering nation could be Egypt, since there is a division between Ethiopia and Egypt.
Eugene Finnegan Bible Project 