the song is "they shall walk with me in white"
Karen Peck, the Primitive Quartet and the Inspirations are all on the net singing it, there is another group that sings it and I really like them but I don't know their name. I hear them on the radio a lot though. I think the Inspirations and The Primitive QT are on Youtube singing it.

God bless

they will walk with for im am worthy that all i can remember not much to go on please help if you know the song