 As such these cantatas have consecutive "K" numbers in the chronological Zwang catalogue for Bach's cantatas published in 1982.In the Zwang catalogue the cantata for Reformation Day "Ein feste Burg ist unser Gott", BWV 80, is inserted between the cantatas for Trinity XXI and XII, as a cantata premiered in 1724.More recently, this cantata is, however, no longer considered to have been composed in 1724.