Jude 1:1-9

3 Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you, and exhort [you] that ye should earnestly contend for the faith which was once delivered unto the saints.
5 I will therefore put you in remembrance , though ye once knew this, how that the Lord, having saved the people out of the land of Egypt, afterward destroyed them that believed not.
7 Even as Sodom and Gomorrha, and the cities about them in like * manner, giving themselves over to fornication , and going after strangeb flesh, are set forth for an example, suffering the vengeance of eternal fire.