'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)

403. From these quotations it is clear what 'a city' means. But because everything is put together as history, what else can people who are confined to the sense of the letter see than the idea that Cain built a city and called it Enoch? Yet even they from the sense of the letter must suppose that the earth was already populated, notwithstanding what is said about Cain being Adam' s firstborn. The historical sequence of events implies this. But as stated already, it was the custom among the most ancient people to convert all things into representative types and then arrange them as history. And to them this was something supremely delightful. When they did this everything they saw was seemingly alive.