that no one should take advantage of and wrong a brother or sister in this matter; because the Lord is an avenger in all these things, as also we forewarned you and testified.
      1. It is expressed in these words: That you should abstain from fornication (1 Thessalonians 4:3; 1 Thessalonians 4:3), by which we are to understand all uncleanness whatsoever, either in a married or unmarried state. Adultery is of course included, though fornication is particularly mentioned. And other sorts of uncleanness are also forbidden, of which it is a shame even to speak, though they are done by too many in secret. All that is contrary to chastity in heart, speech, and behaviour, is contrary to the command of God in the decalogue, and contrary to that holiness which the gospel requires.