Gomorra (Γόμορρα) is the Greek form of Amorah (עֲמֹרָה, H6017) — the twin city of Sodom destroyed by God with fire and sulfur in Genesis 19. It appears about 4 times in the New Testament, always as the paradigmatic example of divine judgment on unrepentant wickedness.
Gomorrah's theological function in the New Testament is as a warning monument. Matthew 10:15 and Luke 10:12 record Jesus using it for comparison: towns that reject the gospel will face worse judgment than Sodom and Gomorrah on the day of judgment. Paul quotes Isaiah 1:9 in Romans 9:29 — 'If the Lord Almighty had not left us descendants, we would have become like Sodom, we would have been like Gomorrah.' 2 Peter 2:6 says God condemned Sodom and Gomorrah by burning them to ashes, 'making them an example of what is going to happen to the ungodly.' Jude 7 adds they 'serve as an example of those who suffer the punishment of eternal fire.' Gomorrah is not just ancient history — it is an eschatological warning standing in every generation.