In this fourth chapter of the Book of Jonah, (Jonah 4), the prophet Jonah has a strange reaction to his success. He's angry, and sulky. He thinks he knows better than God does. What is this story about?

Rev. George McCurdy, in his exegesis of this chapter, offers a summary in his Study Guide for the Book of Jonah, which is available for free as a .pdf, for your use. Below, we've excerpted part of his summary, and edited it for use in this context.

The people of the Jewish church in Jonah's time didn't want to reconsider their belief in their "most-favored-nation status." They challenged the Lord. They couldn't understand why He wanted to save their enemies in Nineveh.

Despite the hard lessons in chapters 1 and 2, and his success as described in chapter 3, Jonah still thought he knew better than the Lord. He thought that God was being too soft and loving -- too forgiving -- and that He needed to come around to Jonah’s tougher view.

Jonah got so angry and vengeful that he preferred to die rather than approve of the Lord’s way to save the Ninevites. His self-love wanted shade -- protection for its concepts. The Lord needed to bring such thinking to an end; the worm brought about death to the gourd from within. The Lord then sent a vehement east wind, that represents a blowing away of the stagnant thinking of the church.

The Lord's heavenly sun shone upon Jonah, but he felt faint. Here, Jonah's insistence on his own troubling view of things made him uncomfortable with the Lord’s view. The Divine guidance offered him a way to learn to enjoy the success of his neighbors as his own, but he wouldn't take it.

For us, then -- what? This story is telling us that we can't just keep the truths of the Word for ourselves; we have to go to Nineveh and share them. And then, if people start to hear them, and use them to turn their lives around, we can't allow ourselves to get resentful that the Lord accepts their repentance and forgives them. It's a very human reaction; think of the disciples vying to be first in the Lord's command structure (Luke 9:46), or the brother of the prodigal son (Luke 15:28-29), or the workers in the vineyard who had worked all day for a denarius (Matthew 20:10-12). But... it's not a good reaction. The Lord doesn't admire it in Jonah, and doesn't admire it when it crops up in our minds, either.

Rev. Martin Pennington recommends several explanatory passages from Swedenborg's theological writings:

"Shade or shadow means the perception of good and truth lies in obscurity." (Arcana Coelestia 2367)

"A vine is spiritual good (the spiritual church)". (Arcana Coelestia 217)

"A worm represents falsity gnawing away and tormenting one." (Arcana Coelestia 8481)

"'And the sun grew hot' in the contrary sense means self-love and love of the world." (Arcana Coelestia 8487)

And... here's a link to an interesting (audio) sermon on this chapter, by Rev. Todd Beiswenger.

32. Love and faith are first called 'the great lights', then love is called 'the greater light' and faith 'the lesser light'. In reference to love it is said that it will have dominion over the day, and in reference to faith that it will have dominion over the night. Because these are arcana and have become hidden, especially at this end of an epoch, in the Lord's Divine mercy let the whole subject be opened up. The reason they have become hidden, especially at this present end of an epoch, is that now is the close of the age, when love is almost non-existent, and consequently faith too, just as the Lord Himself foretold in the Gospels with these words,

The sun will be darkened, and the moon will not give its light, and the stars will fall from heaven, and the powers of the heavens will be shaken. Matthew 24:29.

Here 'the sun' is used to mean love, which is 'darkened', 'the moon' faith which does not give its light, 'the stars' cognitions of faith which fall from heaven, and which are the various 'powers of the heavens'. The Most Ancient Church acknowledged no other faith than love itself; celestial angels as well do not know what faith is except faith which stems from love. Love pervades the whole of heaven, for in the heavens no other life is found except the life that belongs to love. This is the source of all happiness in heaven, a happiness so great that no aspect of it can be described or in any way captured in human concepts. People in whom this love is present love the Lord wholeheartedly. Yet they realize, say, and perceive that all love, thus all life, which belongs exclusively to love, and so all happiness, come from the Lord and nowhere else, and that they derive not one trace of love, life, and happiness from themselves. The Lord's being the source of all love was again represented by the greater light, that is, the sun, at the Transfiguration, for His face shone like the sun, and His garments became white as the light, Matthew 17:2. What is inmost is meant by His face, and what emanates from the inmost by His garments. Thus His Divinity is meant by the sun or love, and His Humanity by the light or wisdom coming from love.