'Edom' or 'Idumea,' as in Isaiah 34:5, signifies people who are in evil and falsities derived there.

(References: The Inner Meaning of the Prophets and Psalms 34)

1682. 'The king of Sodom went out, and the king of Gomorrah, and the king of Admah, and the king of Zeboiim, and the king of Bela, that is, Zoar' means evils and falsities which reign generally. This is clear from what was stated above at verse 2 about the same kings being evil desires and false persuasions. In that place those same kings meant all evils and all falsities in general, or what amounts to the same, evil desires and false persuasions, and therefore it was said that war was made with them. The subject after that turned to war with the Rephaim, Zuzim, Emim, and Horites, and also with the Amalekites and Amorites, and finally with these kings who were named at the beginning. Here therefore these same kings mean solely the reigning evils and falsities that belong to a lower degree.