We had the 23rd Psalm read to us every school day when I was in elementary school, so I know it by heart to this day. The most beautiful thing ever written.
In German, which is why it never caught on in the English speaking world. He uses the piano to imitate the sound of a harp, and the women are intended to be angels. It's in A-flat, but he turns to a clouded C-flat (7 flats!) for the Valley of the Shadow of Death at 1:45. The coda, beginning at 4:01, just takes your breath away.