Then the word of the LORD came to Jonah the second time, saying,
"Arise, go to 1Nineveh, that great city, and call out against it the message that I tell you."
So Jonah arose and went to Nineveh, according to the word of the LORD. Now 2Nineveh was an exceedingly great city, three days' journey in breadth.
References for Jonah 3:3
[See ver. 2 above]
Jonah began to go into the city, going a day's journey. And he called out, "Yet forty days, and Nineveh shall be overthrown!"