By God's grace, I know Satan very well. If Satan can turn God's Word upside down and pervert the Scriptures, what will he do with my words — or the words of others?

Confession Concerning Christ's Supper, Part 3. Robert E. Smith, tr.Dr. Martin Luthers Werke: Kritische Gesamtsusgabe. (Weimar: Herman Boehlaus Nachfolger, 1909), pp.499-500.