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.

6767. 'Do you intend to kill me . . .' means, Do you wish to destroy my faith ... This is clear from the meaning of 'killing' as destroying, dealt with below; and from the meaning of a Hebrew man, to whom 'me' refers here, as one who belongs to the Church. Faith too is accordingly meant, for faith goes together with the Church, and the two are so bound up with each other that a person who destroys the faith present with someone destroys the Church with him. This is also 'to kill him', for by taking faith away he takes spiritual life away, the life that remains being a life that is called death. From this it is evident that 'Do you intend to kill me?' means, Do you wish to destroy my faith?

[2] The fact that 'killing' is taking away spiritual life is evident from many places in the Word, as in Jeremiah,

Drag them away like sheep for the slaughter, and destine them to the day of killing. How long will the land mourn and the plant of every field wither, on account of the wickedness of those who dwell in it? The beasts and the birds will be devoured. Jeremiah 12:3-4.

'The day of killing' stands for the time that the Church is laid waste, when there is no longer any faith because there is no charity. 'The land which will mourn' stands for the Church; 'the plant of every field' stands for all the facts known to the Church that hold truth within them; 'the beasts and the birds will be devoured' stands for the fact that forms of good and truths will be destroyed. For the meaning of 'the land' as the Church, see 566, 662, 1067, 1262, 1413, 1607, 1733, 1850, 2117, 2118 (end), 2928, 3755, 4447, 4535, 5577. The meaning of 'the plant' as factual knowledge holding truth within it is clear from places in the Word where plant is mentioned. And for the meaning of 'the field' as that which is of the Church, see 2971, 3710, 3766, of 'the beasts' as affections for good, thus forms of good, 45, 46, 142, 143, 246, 714, 715, 719, 1823, 2179, 2180, 3218, 3519, 5198, and of 'the birds' as affections for truth, 5149. From all this one may recognize what the meaning of these words is, and also that the spiritual sense is present in every detail there. Anyone can see that without the inner meaning there could be no understanding of what 'the day of killing' is, or of what is described by the details 'will the land mourn', 'the plant of every field wither, on account of the wickedness of those who dwell in it', and 'the beasts and the birds will be devoured'.

[3] In Zechariah,

Thus said Jehovah my God, Feed the sheep for killing, whose owners kill them. Zechariah 11:4-5.

'The sheep for killing' plainly stands for people whose faith is destroyed by those who are their owners. In Ezekiel,

You have desecrated Me among My people for handfuls of barley and for crusts of bread, to kill souls that ought not to die, and to keep alive souls that ought not to live. Ezekiel 13:19.

Here also 'killing' plainly stands for destroying spiritual life, that is, charity and faith. In Isaiah,

What will you do on the day of visitation and vastation? They will fall beneath the bound and beneath the killed. Isaiah 10:3-4.

Here 'the killed' stands for those who are in hell, thus for those immersed in evils and falsities.

[4] In the same prophet,

You are cast out from your sepulchre like an abominable branch, [like] a garment of the killed, [like] those pierced with the sword. You will not be united with them in the sepulchre, for you have destroyed your land, you have killed your people. Isaiah 14:19-20.

'The killed' stands for those who have been deprived of spiritual life; 'you have killed your people' stands for his destruction of forms of the truth and good of faith. In John,

The thief does not come except in order to steal, kill, and destroy. I have come in order that they may have life. John 10:10.

'Killing' stands for destroying the life of faith, and therefore it says, 'I have come in order that they may have life'. In Mark,

Brother will deliver up brother to death, and the father his children, and the children will rise up against parents and kill them. Mark 13:12.

This refers to the last days of the Church when there is no longer any charity and therefore no faith either. 'Brother', 'children', and 'parents' in the internal sense are the Church's forms of good and its truths; and 'killing' is destroying them.

[5] Because one who had been 'killed' meant a person who had been deprived of spiritual life, and 'the field' meant the Church, it had therefore been decreed in the representative church that if anyone on the surface of the field touched somebody who had been pierced with the sword, or who had been killed, he would be unclean for seven days, Numbers 19:16. 'Slain with the sword' means truth wiped out by falsity, see 4507; for 'the sword' is falsity that wipes out truth, 2799, 4499, 653. It was likewise decreed that if anyone was found killed in the land which was their inheritance, lying on the field, and it was not known who had killed him, the elders and judges were to measure the distances to the cities which were round about. Having found out by doing this which was the nearest city, they were to take a heifer and break its neck at a fast-flowing river, and to do many other things, Deuteronomy 21:1-10.