In chapter 4 of the Book of Amos, verses 1-3 are talking about people who pervert the truths of the church. They will fall into falsities in outermost things.

In the Bible, fish represent "lower" things than mammals, so we can interpret the fishhooks in verse 2 as meaning being caught and held fast in natural or lower things.

Verses 4-6 are about acts of worship such as tithes and sacrifices. These look similar to genuine worship, but are only external sorts of things. We can tell because ‘teeth’ (in verse 6) represent ultimates or outermost things (see Secrets of Heaven 6380). It follows that “cleanness of teeth” would mean outermost things that look good but only imitate genuine worship. The Lord exhorts, “Yet you have not returned to me.”

Verses 7-8. Some things true will remain, when where there are too many false ideas, the truths don't get through. This can be seen where the Lord says, “I made it rain on one city; I withheld rain from another city... where it did not rain the part withered.” Again the Lord exhorts, “Yet you have not returned to me.”

Verse 9. Afterward all things of the church are falsified, shown by blight attacking the gardens, vineyards, fig tree and olive trees. The last three represent spiritual, natural and celestial things, or all the things of spiritual life. “Yet you have not returned to me,” says the Lord.

Verses 10-11. The Lord explains the devastating things he allowed to happen: plague in Egypt, death of young men by swords, stench in the camps, Sodom and Gomorrah. This is because they are profaned by sensual knowledges. Profanation means the mixing of good and evil together. (See Secrets of Heaven 1001[2]).

This extends to all things of the church, with the church being the Lord’s kingdom on earth (Secrets of Heaven 768[3]).

With profanation “as soon as any idea of what is holy arises, the idea of what is profane joins immediately to it,” (Secrets of Heaven 301).

Now there is hardly anything left. “Yet you have not returned to Me,” says the Lord again.

Verses 12-13: Because people adamantly remain in their profane ways, they are warned, “Prepare to meet your God!”. This is the God powerful and mighty, “who forms mountains, and creates the wind,” and even more close to home, “Who declares to man what his thought is.” As intimately a knowing as that is, the Lord’s love for all humanity is contained in His exhortations for them to turn themselves to Him.

See, for example, Luke 6:44-45, and True Christian Religion 373.

439. And there were stings in their tails, and their power was to hurt men five months. This symbolizes their clever falsifications of the Word, by which for a short time they darkened and enchanted the intellect, and so deceived and captivated it.

Stings in the tails symbolize clever falsifications of the Word - stings symbolizing cunning and guile, and tails the Word's truths falsified (no. 438). Their power to hurt means, symbolically, that they could induce a mental numbness, or in other words, that they could darken and enchant the intellect and so deceive and captivate it. For their tails were like scorpions, and scorpions have this symbolism (no. 425). Five months means, symbolically, for a short time, as in no. 427 above.

Such is the case when people like this take some things from the Word and apply them. For the Word was written in terms of things that correspond, and the correspondent expressions are partly apparent truths, which conceal genuine truths within them. If these genuine truths are unknown in the church, it is possible for people to take from the Word many things which at first appear to support heresy. But when genuine truths are known in the church, then the apparent truths are laid bare, and the genuine truths come into view. Before this comes about, however, a heretic may use various things from the Word to draw a veil over the intellect and enchant it, and so to deceive and captivate it.

This is what those people do who assert that a person's sins are forgiven him so that he is justified, by an act of faith of which no one is at all aware, and this in a moment - if not before, then in the last hour of dying. This also can be illustrated by examples, but here is not the place for it.

Stings symbolize falsities arising from evil and doing harm also in Amos:

Behold, the days shall come upon you when they will take you away with stings... (Amos 4:2)

And in the book of Numbers, that the people should drive out the inhabitants of the land, lest they be thorns in their eyes and stings in their sides (Numbers 33:55).

Thorns, briers, nettles, and thistles also symbolize falsities accompanying evil because of their stings.