So Jonah arose, and went to Nineveh, according to the word of Yahweh. Now Nineveh was an exceedingly great city, three days' journey across.
What a remarkable thing! Jonah, no doubt, in his heart was not happy with what he was doing. This is something that is revealed further on in the text. Jonah's anger at God for not destroying Nineveh. He still hated these people. He still didn't want God to work in their lives. He was only there because it was preferable to dissolving in the gastric juices of the whale. Notice there was no hope laid out in his message at all, no call to repentance, no loving exhortations, just a message of judgment. "Forty days, and Nineveh is going to be overthrown." But the people believed God much to Jonah's chagrin.