1 Thessalonians 4:3, 6
1 Thessalonians 4:3 ASV
For this is the will of God, even your sanctification, that ye abstain from fornication
1 Thessalonians 4:6 ASV
that no man transgress, and wrong his brother in the matter: because the Lord is an avenger in all these things, as also we forewarned you and testified.