What does the Bible say about cheating on a spouse? What are the consequences of adultery? Warnings for Adultery The Bible is clear that all unrepentant adulterers are headed for the judgment of God. Adultery falls under the many sexual sins that are classified as sexual immorality and Revelation 21:8 clearly says that “the cowardly, the faithless, the detestable, as for murderers, the sexually immoral, sorcerers, idolaters, and all liars, their portion will be in the lake that burns with... Read more