1 Corinthians 10:8 Neither let us commit sexual immorality, as some of them committed, and in one day twenty-three thousand fell. (See NAS)
Jude 1:7 Even as Sodom and Gomorrah, and the cities around them, having, in the same way as these, given themselves over to sexual immorality and gone after strange flesh, are set forth as an example, suffering the punishment of eternal fire. (See RSV)