', is a cantata by Johann Sebastian Bach, a church cantata for the third Sunday after Easter, called '' (Jubilate Sunday).
Bach composed the cantata in his second year as in Leipzig and first performed it on 22 April 1725. It is the first of nine cantatas on texts by Christiana Mariana von Ziegler, which Bach composed at the end of his second annual cycle of cantatas in Leipzig. Based on the Gospel reading from the Farewell Discourse, where Jesus, announcing that he will leave, says "your sorrow shall be turned into joy", Bach contrasts music of sorrow and joy, notably in the unusual first movement, where he inserts an almost operatic recitative of Jesus in the fugal choral setting. The architecture of the movement combines elements of the usual concerto form with the more text-related older form of a motet. Bach scores an unusual flauto piccolo (descant recorder in D) as an obbligato instrument in an aria contemplating the sorrow of missing Jesus, who is addressed as a doctor who shall heal the wounds of sins. Bach scores a trumpet in only one movement, an aria expressing the joy about the predicted return of Jesus. The cantata in six movements closes with a chorale, the ninth stanza of Paul Gerhardt's hymn "".