This good old hymn has been in my head this whole week. The tune to this is very nice, it comes from our regular church hymnal.
Far away in the depths of my Spirit tonight
Rolls a melody sweeter than Psalm.
In celestial like strains it unceasingly falls
O'er my soul like an infinite calm.
Peace, Peace, wonderful Peace.
Coming Down from the Father above
Sweep over my Spirit for ever I pray
In fathomless billows of love.