Thank you for the info.
I did some searching and found the following site which gives the English and German translation.
http://music.minnesota.publicradio.org/features/0104_passion/index.shtml
I do not know anything about singing, choirs etc. It appears the St. Thomas choir in the video above is singing the five lines below. And that's all they sing. No more, no less. Is that correct?
Sind Blitze, sind Donner in Wolken verschwunden?
Eröffne den feurigen Abgrund, o Hölle,
Zertrümmre, verderbe, verschlinge, zerschelle
Mit plötzlicher Wut
Den falschen Verräter, das mördrische Blut!
Have you seen this choir and Mr. Biller? Mr. Biller is quite extraordinary to be able to control about 100 singers and 30+ instruments. I counted the groups. In the video above it appears there are 5 from bass to soprano all singing at a different time until the end when they all merge.
If I visit Germany I shall have to make it a point to visit this church and hear this choir. Thanks again.