Cantata no. 185: Barmherziges Herze der ewigen Liebe, BWV.185

Johann Sebastian Bach composed the church cantata Barmherziges Herze der ewigen Liebe (Merciful heart of eternal love), BWV 185, in Weimar for the fourth Sunday after Trinity and first performed it on 14 July 1715.

Bach composed the cantata as concertmaster in Weimar, responsible for one church cantata per month. The text was written by the court poet Salomon Franck for the occasion and published in 1715. He included as the closing choral the first stanza of Johannes Agricola's hymn "Ich ruf zu dir, Herr Jesus Christ". The cantata is structured in six movements and begins with a duet, followed by a sequence of alternating arias and recitatives and closed by a four-part chorale. It is scored for a small ensemble of four vocal parts, oboe, strings and continuo.

Bach led the first performance in the court chapel of Schloss Weimar on 14 July 1715. He performed the cantata again, with small instrumental revisions, at the beginning of his tenure as Thomaskantor in Leipzig, coupled with the new cantata Ein ungefärbt Gemüte, BWV 24.