 An unknown poet began the text with a quotation from the farewell discourses of Jesus . He used a stanza of Georg Grünwald 's hymn " Kommt her zu mir , spricht Gottes Sohn " in movement 3 and as the closing chorale a stanza from " Es ist das Heil uns kommen her " by Paul Speratus ( 1524 ) . Bach structured the cantata in six movements , a gospel quotation in the beginning , chorales as movements 3 and 6 , otherwise recitatives and arias . He scored it for three vocal soloists , a four @-@ part choir and a Baroque instrumental ensemble of two oboes d 'amore , strings and continuo . 
