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.

5212. 'And behold, seven heads of grain were coming up on one stalk' means facts known to the natural, which facts existed linked together. This is clear from the meaning of 'heads' or 'tips' as facts known to the natural, dealt with below, and from the meaning of 'on one stalk' as existing linked together, for all present on one stalk are linked together by their common origin. The reason facts are meant by 'heads' or 'tips' is that 'grain' means the good of the natural, 3580; for facts are the containers of natural good, just as heads are of grain. In general all truths are vessels for containing good; and so too are facts since these are truths of the lowest order. Truths of the lowest order, that is, the truths belonging to the exterior natural, are called known facts because they reside in a person's natural or external memory. They are also called such because for the most part they are dependent on the light of the world and can for that reason be presented and represented to others by the use of words, that is, by the use of ideas put into words that draw on things such as belong to the world and the light of the world. The contents of the interior memory however are not called facts but truths since these are dependent on the light of heaven. Without the aid of that light they are unintelligible, and without the use of words, that is, of ideas put into words that draw on things such as belong to heaven and the light of heaven they are inexpressible. The facts meant here by 'heads' or 'tips' are ones that are known to the Church, regarding which see 4749, 4844, 4964, 4965.

[2] The reason there were two dreams, one about seven cows, the other about seven heads of grain, was that in the internal sense both parts of the natural are dealt with, the interior natural and the exterior natural, the rebirth of the two being the subject in what follows. By 'the seven cows' are meant things in the interior natural which have been called the truths belonging to the natural, 5198; by 'the seven heads of grain' are meant the truths in the exterior natural, which are called facts.

[3] Interior facts and exterior ones are meant by 'the tips of the river Euphrates even to the river of Egypt' in Isaiah,

So it will be on that day, that Jehovah will smite from the tip of the river even to the river of Egypt, and you will be gathered one to another, O children of Israel. So it will be on that day, that a great trumpet will be blown, and they will come - those who are perishing in the land of Asshur, and those who are outcasts in the land of Egypt - and they will bow themselves down to Jehovah on the holy mountain, in Jerusalem. Isaiah 27:12-13.

'Those perishing in the land of Asshur' stands for interior truths, and 'the outcasts in the land of Egypt' for exterior truths, which are facts.

[4] Comparison with the blade, the tip or the ear, and the full grain also implies the rebirth of a person by means of factual knowledge, the truths of faith, and the good deeds of charity, in Mark,

Jesus said, The kingdom of God is like when someone casts seed onto the land. Then he sleeps and rises, by night and by day, but the seed sprouts and grows, he himself knowing not how; for the earth bears fruit of its own accord, first the blade, then the ear, after that the full grain in the ear. Once the fruit has been brought forth, he will immediately put in the sickle, because the harvest is established. Mark 4:26-29.

'The kingdom of God', which is compared to the blade, the ear, and the full grain, is heaven existing with a person through regeneration; for one who has been regenerated has the kingdom of God within him and he becomes an image of the kingdom of God, that is, of heaven. 'The blade' is factual knowledge, which comes first; 'the ear' is knowledge of what is true that develops out of that; and 'the full grain' is the good that develops out of this. In addition the laws laid down regarding gleanings, Leviticus 19:9; 23:22; regarding the freedom to pluck the ears on a companion's standing grain, Deuteronomy 23:25; and also regarding the non-eating of bread or of dried ears or of green ones before they had brought a gift to God, Leviticus 23:14, represented such things as are meant by 'ears'.