Who knows whether God will not turn and repent, and turn away from his fierce anger, so that we might not perish?"
It is amazing that God brought the whole city to faith and repentance through the preaching of a man who did not love the people to whom he preached. Ultimately salvation is of the Lord (Jonah 2:9). It is not dependent on the attitudes and actions of His servants, though our attitudes and actions affect our condition as we carry out the will of God.