The Raw Power of a Hymn Tune

This morning, while finishing up some homework, I was listening to Felix Mendelssohn's Symphony No. 5. The work begins with a great stack of chords; one note building on top of another, building and building, and then...resolving-almost seamlessly. The 1st movement is also full of what is known as a "Dresden Amen." Made up of a building chord progression and slow moving crescendo, the Dresden Amen captivates listeners and demands their attention. The 2nd and 3rd movements, while short, also have their unique characteristics. However, I forget all about the previous two movements once the theme of the 4th is revealed; "A Mighty Fortress Is Our God." The title of the Hymn seems self-explanatory, and growing up I was pretty sure I understood what it meant. My suspicion was turned over once I heard the 4th movement; Mendelssohn's arrangement of the hymn tune. The setting of the tune truly brings it's title to life. I cannot say anything that will express the feelings I experience when listening to this movement; so please, experience it for yourself.