I wrote about this motet back on September 30th 2012 as the introductory posting to my series Johann Sebastian Bach: The Motets. It's one that I love so much that I can't resist posting it again in part because it's all too often ignored in discussions about Bach's sacred music. It's always puzzled me that a piece of music as lovely as this is so often overlooked. Bach wrote it most likely in 1736 for the funeral procession of for the funeral of Christian Weiss the pastor of St. Thomas, and rescored it ten years later in a somewhat more restrained version for indoor use. Its melody comes from a hymnal printed in Leipzig in 1625 and Bach isn't the only composer to recognise its merits – Mendelssohn also used it in his oratorio St Paul.