NET
6 and if he turned to ashes the cities of Sodom and Gomorrah when he condemned them to destruction, having appointed them to serve as an example to future generations of the ungodly,
Darby
6 and having reduced [the] cities of Sodom and Gomorrha to ashes, condemned [them] with an overthrow, setting [them as] an example to those that should [afterwards] live an ungodly life;
KJV
6 And turning the cities of Sodom and Gomorrha into ashes condemned [them] with an overthrow, making [them] an ensample unto those that after should live ungodly;