abstain from fornication
1 Thessalonians 4:3
4:3 abstain from fornication. While there may be questions about engaging in “doubtful” things (Romans 14:1), there can be no doubt at all—even in this permissive age—that fornication (that is, any sexual relationship outside of heterosexual marriage) is always contrary to God’s will. Engaging in it will inevitably bring grief.