Apocalypse Revealed # 307
307. So that people might kill one another. This symbolizes intestine hatreds, infestations by the hells, and inner anxieties.
These are symbolized inasmuch as to take peace from the earth means, symbolically, to take away charity, spiritual security, and inner rest, and a fiery red horse symbolizes an understanding of the Word extinguished as to goodness. For these result when there is no more goodness, and there is no more goodness when people do not know what good is.
It is apparent that intestine hatreds occur when there is no charity, that infestations by the hells occur when there is no spiritual security, and that inner anxieties occur when there is no rest from evils and their lusts. But they occur after death, if not before in the world.
That to kill has this symbolic meaning follows from the symbolism of a sword, which is the subject next.
Arcana Coelestia # 7488
7488. EXODUS CHAPTER 9.
TEACHINGS ABOUT CHARITY
From what has been said about self-love and love of the world it is evident that they are the root of all evils; and since they are the root of all evils they are the origin of all falsities. And conversely love to the Lord and love towards the neighbour are the source of every form of good; and since they are the source of every form of good they are the fount of all truths.