Fury is a receding from good, and anger is a receding from truth.

In Genesis 49:20, this signifies turning away from confirmed truth. (Arcana Coelestia 6359)

In Exodus 15:7, this signifies the fury of lusts and their endeavor to inflict violence. (Arcana Coelestia 8284)

In Zephaniah 1:15, this signifies the advent of the Lord to judgment. (Divine Love and Wisdom 5)

In Revelation 14:10, this signifies truth from which comes good. (Apocalypse Revealed 635)

(References: Arcana Coelestia 3517, 3614, 4052)

347. That 'the end of days' is used to mean the course of time may be clear to anyone. In its earliest form, when simplicity was still present in it, this doctrine called Cain does not seem to have been so unacceptable as it was later on. This is clear from the fact that they called offspring 'Gained a man, Jehovah'; so in its earliest form faith was not separated so much from love as it was 'at the end of days', or in the course of time, as usually happens with all doctrine that belongs to true faith.