Johannes Gigas

Johannes Gigas (22 February 1514 — 12 July 1581) was a German Protestant theologian, hymn writer, educator and Reformer. Gigas was born in Nordhausen, Thuringia and died in Schweidnitz (now Świdnica, Silesia, Poland).^[1]

The libretto of Ach, lieben Christen, seid getrost, BWV 114, a chorale cantata by Johann Sebastian Bach, was based on "Ach lieben Christen seid getrost", a hymn text by Gigas.