In this sermon, Pastor Roger highlights God's compassion as the central theme of the book of Jonah. He emphasized the transformation of Jonah from selfishness and disobedience to being a willing instrument of God's message. Despite Jonah's initial reluctance and anger, he eventually obeyed and proclaimed God's message to the people of Nineveh, who responded with repentance and humility. Pastor Roger points out that we, too, should embrace God's compassion and not withhold it from those we deem undeserving. He challenges us to view others as God does and strive for personal transformation in the likeness of Jesus.