I'm not a big fan of chorale music, but of course that one is very famous and rousing.
This one is very spiritual to me. Everything Bach did was for his church, and the name of it makes me think of the story of when Jesus was born and the angels woke the shepherds. Sleepers Awake! A Voice is Calling
It's a popular classical guitar piece as well. But it sounds better on a pipe organ. I thought most of the ones on Youtube are too fast. I like this one:
And then this one.