Herr, wenn die stolzen Feinde schnauben, BWV 248 VI

Herr, wenn die stolzen Feinde schnauben (Lord, when our insolent enemies snort), BWV 248VI (also written as BWV 248 VI), is a church cantata for Epiphany, which Johann Sebastian Bach composed as the sixth part of his Christmas Oratorio, written for the Christmas season of 1734–35 in Leipzig. The cantata was first performed on 6 January 1735.

History
Bach had been presenting church cantatas for the Christmas season in the Thomaskirche (St. Thomas) and Nikolaikirche (St. Nicholas) since his appointment as director musices in Leipzig in 1723, including these cantatas for Epiphany:
 * As part of his first cantata cycle: Sie werden aus Saba alle kommen, BWV 65, first performed in 1724.
 * As part of his second cantata cycle: Liebster Immanuel, Herzog der Frommen, BWV 123, first performed in 1725.

Cantata fragment BWV 248 VI a
BWV 248 VI a, also indicated as BWV 248a, is a fragment of a cantata, transmitted without text, the opening chorus of which Bach likely borrowed from So kämpfet nur, ihr muntern Töne, BWV 1160, one of his secular cantatas. Picander wrote the libretto of the BWV 1160 cantata (also known as BWV Anh. 10), which otherwise, that is, apart from the likely borrowed opening chorus, survived without music. It was first performed on 25 August 1731, for the birthday of Joachim Friedrich von Flemming.

The cantata transmitted in the BWV 248a fragment, consisting of four revised performance parts in the bundle of contemporary performance material for BWV 248 VI, is a sacred cantata for Michaelmas (29 September), likely first performed in 1734. While nothing more survives of the Michaelmas cantata as such, the four revised performance parts show that most of its music, including the music of its opening chorus and recitatives, was parodied in Part VI of the Christmas Oratorio.

Music and content
BWV 248 VI is scored for 3 trumpets, timpani, 2 oboes, 2 oboes d'amore, 2 violin parts, 1 viola part and continuo.