Impurity

Hebrews 13:4 - Marriage is honorable in all, and the bed undefiled: but whoremongers and adulterers God will judge.

Jude 1:7 - Even as Sodom and Gomorrah, 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.