The first lesson contains the great big miracle in the Book of Jonah. Many people get sidetracked with little stuff, such as the size, oxygen content and digestive processes of the fish. I have no trouble imagining God manipulating any of that. Actually, the power here is not the profundity of the preacher, but the Word itself and the One behind it, but it is still quite amazing. The story of Jonah contains some major repentance, but the word does not appear in the lesson.
Repentance leads to a change for the better.
All four are commercial fishermen. All four drop everything to follow the Lord. They left everything and didn't look back, no pillars of salt these four. When God called Jonah to his prophetic post in Ninevah, he responded by sailing to Tarshish. There are many attractions and distractions in life that lead us to sail away in our own directions.