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.

672. 15:7 Then one of the four living creatures gave to the seven angels seven golden bowls. This symbolizes the truths and goods by which evils and falsities in the church are exposed, drawn from the literal sense of the Word.

The four living creatures, being cherubim, symbolize the Word in its outmost expressions, and protections to keep its genuine truths and goods from being violated, as may be seen in no. 239 above. And because the interior truths and goods in the Word are protected by its literal meaning, therefore that meaning of the Word is symbolized by one of the four living creatures.

The seven bowls have the same symbolic meaning as the seven plagues, for the bowls are vessels, and vessels in the Word have the same symbolic meaning as their contents. So for example, a cup has the same symbolic meaning as the wine in it, and a dish the same symbolic meaning as the food. That cups, goblets, bowls, plates and saucers have the same symbolic meaning as their contents may be seen from the passages that follow after this.

We have already said what the seven angels symbolize above.

The angels were given the bowls because the subject is the influx of truth and goodness into the church in order to expose its evils and falsities, and naked goods and truths cannot flow in, as they are not accepted, but truths clothed can, such as are found in the literal sense of the Word. Moreover, the Lord also operates always from inmost elements through outmost ones, or in fullness. This is the reason the angels were given bowls, which symbolize containing truths and goods such as constitute the Word's literal sense, by which falsities and evils are exposed.

That the literal sense of the Word is a containing vessel may be seen in The Doctrine of the New Jerusalem Regarding the Sacred Scripture, 27-36nos. and 37-49.

[2] That bowls, saucers, cups and goblets, and also wineskins, have the same symbolic meaning as the things they contain can be seen from the following passages:

(Jehovah said,) "Take this... cup of wrath from My hand, and cause all the nations... to drink... ...when they refuse to take the cup..., then you shall say to them, '...You shall surely drink!'" (Jeremiah 25:15-16, 28)

Babylon was a golden cup in Jehovah's hand, that made all the earth drunk. (Jeremiah 51:7)

...I will put (your sister's) cup in your hand... You will be filled with drunkenness and sorrow, with the cup of... devastation, the cup of your sister Samaria. (Ezekiel 23:31-34)

The cup of... Jehovah will come around to you, that there may be vomit on your glory. (Habakkuk 2:16)

...O daughter of Edom...; the cup shall also pass over to you; you shall be drunk and laid bare. (Lamentations 4:21)

Upon the wicked (Jehovah) will rain... stormy winds, the portion of their cup. (Psalms 11:6)

...in the hand of Jehovah there is a cup, and He has mixed it with wine; He has filled it with the mixed wine and poured it out; ...all the wicked of the earth shall drink... (Psalms 75:8)

(Those who worship the beast) shall drink of the wine of the wrath of God, which is mixed with pure wine in the cup of His indignation. (Revelation 14:10)

Awake...! Arise, O Jerusalem, who have drunk from the hand of Jehovah the cup of His wrath; You have drunk the dregs of the cup of trembling... (Isaiah 51:17)

The woman... having in her hand a golden chalice full of abominations and the filthiness of her licentiousness. (Revelation 17:4)

...repay her double...; in the cup in which she has mixed, mix double for her. (Revelation 18:6)

...I am making Jerusalem a cup of trembling to all the surrounding peoples... (Zechariah 12:2)

Blind Pharisee, first cleanse the inside of the cup..., that the outside of them may be clean also. (Matthew 23:25-26, cf. Luke 11:39)

Jesus... said (to the sons of Zebedee), ."..Are you able to drink the cup that I am about to drink....?" (Matthew 20:22-23)

...Jesus said to Peter, ."..Shall I not drink the cup which My Father has given Me?" (John 18:11)

(In Gethsemane Jesus said,) ."..if it be possible, let this cup pass from me." (Matthew 26:39, 42, 44)

(Jesus) taking the cup, ...gave it to them, saying, "Drink from it, all of you. This is My blood, the blood of the new covenant...." (Matthew 26:27-28, Luke 22:17)

O Jehovah, You are... my cup, You uphold my lot. (Psalms 16:5)

You will prepare a table before me...; my cup shall overflow. (Psalms 23:5)

What shall I render to Jehovah...? I will take the cup of salvation... (Psalms 116:12-13)

...the cup of consolation to drink... (Jeremiah 16:7)

A bowl has the same symbolic meaning as a cup or chalice, and so also does a wineskin (Matthew 9:17; Luke 5:37-38; Jeremiah 13:12; 48:12; Habakkuk 2:15).

Bowls, censers and thuribles containing incense have the same symbolic meaning as incense. Vessels of every kind in general have the same symbolic meaning as the things they contain.