2 Peter 2:6

2:6 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,

2 Peter 1:12

Salvation Based on the Word of God

1:12 Therefore, I intend to remind you constantly of these things even though you know them and are well established in the truth that you now have.