Bach tends to write impressive bass arias for the end of Trinity season. When I first wrote about my favorite recording of Cantata 139, by the J.S. Bach Foundation, the cantata was not available on YouTube in full length, but now it is! For those who can understand (a little) German, there is also a terrific explanation by conductor Rudolf Lutz of everything that happens in the cantata. Find both YouTube links in my post from 2017 here.