An enemy in the Bible refers to people who are in the love of evil and the false thinking that springs from evil. On a deeper level it refers to the forces of hell itself, and on an abstract level it refers to evil itself and falsity itself – which are, obviously, the ultimate enemies we have to fight.

(References: Apocalypse Explained 671; Arcana Coelestia 2851 [1-15], 8282, 8289, 9255 [1-2], 9313)

2451. 'And all the inhabitants of the cities' means that all goods were severed from them so that they might possess nothing but evils. This is clear from the meaning of 'the inhabitants' when they are those of a city, as goods - as may be confirmed from many examples in the Word. This meaning is also evident from the fact that when 'a city' means truth, as has been shown, 'inhabitant' means good, for it is truth that good inhabits. But truth in which there is no good is like an empty or uninhabited city. That in addition to this all goods as well are separated from the evil so that they possess nothing but evils, see above in 2449.