'City' in the Bible

"Get up and go to Nineveh, that great city! Then cry out in protest against it, because their evil has come to my attention."

"Get up and go to Nineveh, that great city, and proclaim to it the message that I tell you."

Now Nineveh was a very large city, requiring a three-day journey to cross through it. As Jonah started into the city on the first day's journey, he proclaimed the message, "40 days more and Nineveh will be overthrown!"

Then Jonah left the city and sat down on the eastern side. There he made a shelter for himself and sat down under its shade to see what would happen to the city.

So why shouldn't I be concerned about Nineveh, that great city, in which there are more than 120,000 human beings who do not know their right hand from their left, as well as a lot of livestock?