The city of "Sodom", in the Bible, represents the love of self and the love of ruling or dominating others springing from the love of self. This is why it is depicted as such an evil place, and why it was utterly destroyed by God.

This is not, of course, the usual association people have with Sodom; it has long been connected to homosexuality because in Genesis 19 the men of the city tried to rape the male angels who were visiting Lot. But if you think about it, it makes sense. Experts regard rape as a crime of violence and domination more than a crime of sexual desire. The fact that Lot offered his daughters as an alternative indicates that he thought that the men of the city were not picky about who they dominated and violated. Their chief pleasure was in the domination. All stories about adultery in the Bible -- from the more mild up to and including the intended homosexual gang rape in Sodom -- are actually depictions of selfishness in various forms.

'To be avenged seventy and seven fold' denotes damnation.

In Genesis 4:15, vengeance signifies a sacrilege, and condemnation for it. (Arcana Coelestia 392)

In Deuteronomy 32:35, this signifies the genuine truth that the Lord is love and mercy itself. (Doctrine Regarding Sacred Scripture 94)

In Psalm 94:1, this signifies judgment on the Jews because they had destroyed the church. (The Inner Meaning of the Prophets and Psalms 344)

In Psalm 99:8, this signifies that the Lord is the Redeemer although it appears that He punishes. (The Inner Meaning of the Prophets and Psalms 349; Doctrine Regarding Sacred Scripture 94)

In Isaiah 59:17, this signifies the truths by which the Lord fought with the hells. (Apocalypse Explained 395[13])

In Isaiah 34:8, this signifies the Last Judgment and the condemnation of people who, by falsities and evils, have destroyed the truths of the church. (Apocalypse Explained 850[16])

(Odkazy: Arcana Coelestia 432-444, Genesis 4:24)