"Then the people of Nineveh believed in God; and they called a fast and put on sackcloth from the greatest to the least of them."
In Jonah we know that he spent time in the belly of the whale for being disobedient to God. Now we see that Jonah has gone to Nineveh and is doing what God told him to do. Because of him being obedient, the people believed in God. This makes me wonder about us, are we doing what God has called us to do? Are we sharing Jesus with others so that they are believing in Him? We must do what God has called us to do and spread His word so that others will come to know Him. This verse shows that when we are obedient to do what He has called us to do, we will see results!