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.

8426. 'At evening you will know that Jehovah has brought you out of the land of Egypt' means that at the end of a former state comes the revelation that they have been delivered. This is clear from the meaning of 'at evening' as the end of a former state, dealt with below; from the meaning of 'knowing' as being revealed, for what Jehovah causes a person to know is called revelation; and from the meaning of 'bringing out' as delivering, as often before, at this point from the molestations that are meant by 'the land of Egypt', 7278.

[2] The reason why 'at evening' means the end of a former state is that changes of state in the next life resemble the times of day in the world, that is to say, morning, midday, evening, and night or twilight, then morning again. It should be recognized that in the spiritual world changes of state are forever taking place, which all who are there pass through, the purpose of it all being that they may continue unceasingly to be made more perfect. For without changes of states, that is, without variations constantly following one another in sequence, those who are there cannot be made more perfect. The changes of states which follow one another in sequence, resembling the times of day and seasons of the year, are never exactly the same when they come round again, but are varied. The beginning of each state corresponds to morning on earth, and also in the Word is meant several times by 'morning'. The end of each state however corresponds to evening, and is also called 'evening' several times in the Word. When it is morning they are in a state of love; when it is midday they are in a state of light or truth; but when it is evening they are in a state that is dim so far as truths are concerned and rather cool so far as good is concerned, since it is a state in which the delight belonging to natural love rules them. This delight is what is meant by 'the selav' which the people received in the evening, and good is what is meant by 'the manna' which they received every morning.

[3] All this goes to show what 'the evening' means - the end of the state of whatever the subject may be; consequently it may mean the end of a state of the Church. But see what has been shown already about the meaning of 'the evening':

In the next life there are changes of state, just as in the world there are changes of times and seasons, 5672, 5962, 6110.

'Evening' is the end of a former Church, and 'morning' the beginning of a new one, 2323, 7844; therefore 'evening, and 'morning' mean the Coming or arrival of the Lord, 7844.

In heaven there is evening and twilight before morning, but no night; night occurs in hell, 6110.