Jude 1:7

Likewise Sodom and Gomorrah, and the cities around them, which, after their example, had habitually committed uncleanness, and gone after other flesh, are set forth an example, suffering the punishment of an eternal fire.

2 Peter 2:6

and having reduced to ashes the cities of Sodom and Gomorrah, punished them with an overthrow, making them an example to those who should afterward live ungodly:

2 Peter 3:7

But the present heavens and the earth, by the same word are treasured up, being kept for fire to a day of judgment, and destruction of ungodly men.

Treasury of Scripture Knowledge

Summary

Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.

Bible References

Are

2 Peter 2:6
and having reduced to ashes the cities of Sodom and Gomorrah, punished them with an overthrow, making them an example to those who should afterward live ungodly: