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.

2227. That 'Abraham will certainly become a great and numerous nation' means that from the Lord will come all good, and from this all truth, is clear from the representation of 'Abraham' as the Lord, dealt with often above, and also from the meaning of 'nation' as good, dealt with in 1159, 1258-1260, 1416, 1849 - here 'a great and numerous nation', by which good and truth deriving from it are meant. That 'great' has reference to good and 'numerous' to truth may become clear from other places in the Word, but I must refrain from quoting them here. Truth derived from good is in the genuine sense spiritual good, for there are two kinds of good, quite distinct and separate from each other, namely celestial good and spiritual good. Celestial good is the manifestation of love to the Lord, spiritual good the manifestation of love towards the neighbour. From the former, that is, celestial good, flows the latter, that is, spiritual good; for no one is able to love the Lord unless he also loves the neighbour. Love to the Lord embraces love towards the neighbour, for love to the Lord originates in the Lord, thus in Love itself towards the whole human race. Abiding in love to the Lord is the same as abiding in the Lord, and one who abides in the Lord must inevitably abide in His love which is directed towards the human race, and thus towards the neighbour, so that in him both kinds of good are present - both celestial and spiritual. Celestial good is indeed good itself, but spiritual good is in fact truth that goes with or is derived from that celestial good. This truth, as stated, is spiritual good. It is celestial good that is meant by 'great', but spiritual good by 'numerous'.