We're off on the beautiful briny this week with the reluctant prophet. It's a great sermon (and that's what it is. Don't expect big fish ready to swallow you whole as that's got nothing to do with why the story has remained in the scriptures. This story has meaning significant enough that the bibles compilers chose to keep it.)
Perhaps the sermon is more about the idea that when we keep God to ourselves, which is exactly what Jonah was doing as he was very reluctant to take God's message to the people of Nineveh, a city way outside Israel's borders and lying somewhere in northern Iraq/Iran, then God shrinks. God actually gets smaller as we don't experience God in new ways and in new settings but becomes so familiar that in effect, God shrinks.
We let God grow when we expose that faith and story and belief to others. When we share God beyond what is familiar, God grows. Some don't want that to happen, but the Bible does.
So here's a story, right at the heart of our popular faith, very visual and not easily forgotten, but because we think about fish we forget the faith. The fish tells us: God wants to grow. God, prevents Jonah limiting God to one language, one culture, one land but rather finally persuades Jonah to let God grow. But Jonah doesn't like it and never does. Some people's faith is just like that.