In the third chapter of the Book of Jonah, Jonah finally reaches Nineveh, and starts preaching repentance and reformation to the people there. And... they listen! Even the King of Assyria listens!

The inner meaning of the story is pretty close to the surface here, and there's important symbolism. Swedenborg summarizes the chapter's meaning in this one sentence:

"The nations, hearing from the Word of God about their sins, and that they would perish, were converted after repenting, and were heard by the Lord, and saved." (The Inner Meaning of the Prophets and Psalms 213)

Rev. George McCurdy, in his exegesis of this chapter, offers this summary:

The great city of Nineveh has many spiritual representations. The world saw Nineveh as a mighty nation, but in the eyes of the Lord, it represented the shallowness and weakness (death) of false doctrines, contrived beliefs confirmed by the proprium (self love), the fallacies of the senses, and the unenlightened understanding that spawns spiritual ignorance.

The Lord’s mercy and love for all prompted Him not only to send His message to Nineveh, but to ensure that it would be preserved for eternity. Jonah’s call to "arise and go" preach to Nineveh is a call for spiritual renewal. It is a call for repentance. The fasting, sackcloth, and ashes symbolize a call to be aware that "where there is no truth, there is no church."

Where the Word is closed, and not loved, there is a loss of conjunction with the Divine resources. The fasting of man and beast symbolizes a need for the spiritual and natural appetites to come to the Lord for that "bread which comes down from heaven." The Ninevites giving up their natural food and drink represents their turning away from "as-of-self" concepts and reminds all who read and hear the Word of the Lord to rely on heavenly manna.

"Why do you spend money for what is not bread, and your wages for what does not satisfy? Listen carefully to Me and eat what is good, and let your soul delight itself in abundance…" (Isaiah 55:2)

The king sitting in ashes and mourning represents a sorrowful attitude toward "the remains of the fire of self-love." Repentance involves self-examination, making oneself guilty for the sins and evils committed, asking the Lord for His help, and desiring to attain a new life.

As we mull over this concept, think about the Lord’s preaching on earth. As He went about His mission, He often used these words: "You have heard it said of old… but I say unto you…" Putting aside human traditions and taking on the Lord’s teachings is an ongoing effort. Jonah was told to preach the words of the Lord. He was not to make things up from his memory. He was to be a true and faithful prophet of the Lord’s ways.

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

Rev. Martin Pennington suggests two explanatory passages from Swedenborg's theological writings:

"Forty days means a period of temptation combats or severe change." (Arcana Coelestia 730)

"A fast represents those who are in a state of unhappiness when good is no longer joined to the truths." (Arcana Coelestia 9182[10])

Other references of interest listed by Rev. McCurdy include:

"As ‘forty’ signified what is full or complete… forty signifies what is complete in respect to instruction and influx… for this reason it was said by Jonah to the Ninevites that ‘the city would be overthrown after forty days" (Jonah 3:4) (Arcana Coelestia 9437[2])

"By being clothed in sackcloth is signified mourning on account of the vastated truth in the church; for garments signify truths; and therefore, to be clothed in sackcloth, which is not a garment, signifies mourning that there is no truth; and where there is no truth, there is no church." Jonah 3:5-6 is cited. (Apocalypse Revealed 492)

"…the rite of putting sackcloth on the loins to testify…mourning may be seen from the historic and prophetic parts of the Word, as in… Jonah 3:5-8… for a sign representative of mourning over the evil on account of which Nineveh was to perish; thus over destroyed good." (Arcana Coelestia 4779[2])

"From the signification of garments it is also manifest why they rent their garments, when any one spoke against the Divine truth of the Word… and why, on account of transgressions against Divine truths, they put off their garments, and put on sackcloth." Jonah 3:5, 6, and 8 are cited. (Apocalypse Revealed 166)

"That ‘ashes’ denote falsity, may be confirmed from passages where another word for ‘ashes (cinis)’ is used, for these ashes have a like origin…" Jonah 3:6 is cited. (Arcana Coelestia 7520)

"…by ‘ashes’ in the opposite sense, namely, what is condemned that remains after the burning from the fire of self love. This is signified by ‘the ashes’ which they carried on the head, and in which they rolled themselves when bewailing their sins." Jonah 3:6 is cited. (Arcana Coelestia 9723)

"In the spiritual sense by kings those who are in truths are signified, by the great ones those who are in goods, by the rich those that are in the knowledge of good, by the mighty they that are in erudition, by servants they that are in such things from others, and thus from memory, and by freemen they that are in such things from themselves…" Jonah 3:7 is cited. (Apocalypse Revealed 337)

"The interior good and also the interior evil…are signified by ‘man,’ are those which are of the intention or end, for the intention or end is the inmost of man; but the exterior good and also the exterior evil which are signified by ‘beast,’ are those which are of the thought, and of the consequent action when nothing stands in the way…By ‘beast,’…in respect to the external or natural man, a man is nothing else than a beast, for he takes delight in the like cupidities and pleasures, as also in the like appetites and sense…Therefore… from a holy rite it was commanded by the king of Nineveh, that both man and beast were to fast, and were to be covered with sackcloth (Jonah 3:7, 8)." (Arcana Coelestia 7523)

"… in the spiritual world a man’s affections appear at a distance like beasts… and beasts, viewed in themselves, are nothing but forms of natural affections… By man and beasts together is signified man as to spiritual and natural affection, in the following passages… Jonah 3:7, 8…" (Apocalypse Revealed 567)

"Here ‘webs’ and ‘garments’ are predicated of things of the understanding, that is, of the thought; ‘iniquity’ and ‘violence,’ of things of the will, that is, of works. In Jonah 3:8… the ‘evil way’ is predicated of falsities, which are of the understanding; and ‘violence,’ which are of the will." (Arcana Coelestia 623[2])

"…the ‘wrath of anger’ is attributed to Jehovah, and consequently ‘repentance.’" (Arcana Coelestia 588[2])

"…the Word is such in the sense of the letter, it may be evident that it cannot be understood without doctrine. But let examples illustrate this. It is said that Jehovah repenteth (Jonah 3:9; 4:2), and it is also said that Jehovah repenteth not (Num. 23:19…): without doctrine these statements do not agree." (Teachings Regarding the Sacred Scripture 51)

"In these passages (Jonah 3:9,10) Jehovah is said to have ‘repented,’ when yet it cannot be that He repents, because He knows all things before He does them; from which it is evident that by ‘repenting’ is signified mercy." (Arcana Coelestia 10441[2-4])

Finally, here's a link to Rev. McCurdy's study guide for the Book of Jonah, which is available for free as a .pdf, for your use.

4353. 'And kissed him' means an interior joining together brought about by love. This is clear from the meaning of 'kissing' as a joining together brought about by love, dealt with in 3573, 3574, 4215, in this case an interior joining together. The present verse deals with the joining of Divine Natural Good, meant by 'Esau', to Natural Truth, meant by 'Jacob'. It deals with this in general, whereas the verses which follow deal more specifically with that joining together. As regards the actual joining together, it is that which brings about a person's regeneration, for he is regenerated through the joining of the truths he knows to the good he cherishes, that is, through the joining of matters of faith to the deeds of charity. The process of that joining together is described fully in this verse and in those that follow. The subject, it is true, is the Lord - how He made His Natural Divine and therefore how He united Divine Good to Truth within the Natural; but because the regeneration of man is an image of the glorification of the Lord, 3138, 3212, 3296, 3490, that regeneration too is at the same time the subject in the internal sense. And because man can get an idea of regeneration more easily than he can of the Lord's glorification, let His glorification be illustrated by means of man's regeneration.

[2] It is evident from the explanations which have been given that the joining together of good and truths which leads to regeneration is a process that grows more and more interior; that is, truths are joined step by step more interiorly to good. For the object of regeneration is that the internal man may be joined to the external, and so the spiritual man be joined to the natural through the rational. Unless the two are joined together no regeneration is accomplished. Nor can that joining together be effected until good has first been joined to the truths within the natural; for the natural has to exist as the underlying groundwork, and things within the natural have to exist in correspondence with those above them. This is the reason why, when the natural is being regenerated, the joining together of good and truths becomes step by step more interior; for the spiritual first joins itself to the things that are inmost in the natural, and after that through these to those that are more exterior. Nor can man's internal join itself to his external unless the truth within that external becomes the good of truth, that is, becomes truth in will and action, 4337. Only then can they be joined together, for the Lord flows into a person through his internal man, especially through the good there. The good there is able to be joined to the good in the external man, but not directly to the truth.

[3] From this it becomes clear that the truth residing with man must first of all become truth in will and action, that is, become the good of truth, before the joining together of the rational and the natural, or of the internal man and the external, can come about. But in what way truth becomes the good of truth may be clear to anyone who gives his attention to it. Every Divine truth is related to the following two commandments: Love God above all things, and love your neighbour as yourself. These two commandments are the base from which truths are derived, the reason why truths exist, and the end to which truths lead - immediately or remotely. Therefore when truths are translated into action they are introduced step by step into their beginning and into their end, that is to say, into charity towards the neighbour and love to the Lord, and as a consequence truth becomes the good which is called the good of truth. Once truth becomes such it is able to be joined to the internal man, a conjunction which becomes step by step more interior as truths that are more interior are implanted within that good. Action comes first, then the desire for it in the person's will follows. For when a person is led by his understanding to carry out any action, he is at length led by his will to do it, till at last he has taken it on as an action performed habitually. When this point is reached it is introduced into the rational or internal man; and once it has been introduced, truth is no longer that which motivates him when he does a good action but good. For now he begins to feel within it something of what is blessed and so to speak of heaven. This remains with him after death, and by means of it the Lord raises him up to heaven.