I grew up in private school singing tons of hymns, but none of them had meaning until later in life. I realized that most have profound theology in them and most have a lot of insight. I thought of this song the other day and can't get it out of my head (not that I want to because it is one of my favorite hymns). I just love the lyrics:

 What can wash away my sin? 
 Nothing but the blood of Jesus. 
 What can make me whole again? 
 Nothing but the blood of Jesus. 

 O precious is the flow 
 that makes me white as snow; 
 no other fount I know; 
 nothing but the blood of Jesus.
 
 This is all my hope and peace: 
 nothing but the blood of Jesus. 
 This is all my righteousness: 
 nothing but the blood of Jesus.