''', is a church cantata by Johann Sebastian Bach. He composed the chorale cantata in Leipzig for the sixth Sunday after Trinity between 1732 and 1735, based on the hymn "" by Paul Speratus. Bach composed the cantata to fill a gap in his cycle of chorale cantatas written for performances in Leipzig from 1724.
The cantata is structured in seven movements, framed as the earlier chorale cantatas by a chorale fantasia and a chorale four-part setting of the first and the twelfth stanza in the original words by the reformer Speratus, published in the First Lutheran Hymnal. The theme is salvation from sin by God's grace alone. An anonymous librettist paraphrased the content of ten inner stanzas to alternating recitatives and arias. Bach scored the cantata for a chamber ensemble of four vocal parts, flauto traverso, oboe d'amore, strings and continuo. He gave all three recitatives to the bass, like a sermon interrupted in reflection by a tenor aria with solo violin and a duet of soprano and alto with the wind instruments.