‘Jerusalem’ is a very important hymn in England, and is often viewed as the traditional alternative to the national anthem. It is based on a Blake poem recalling the ancient myth that Jesus - accompanied by Joseph of Arimathea - spent his youth in England. It is one of Blake’s most reverently patriotic works (published, as it was, during the first World War, when British moral was in dire need of a boost) and has been adopted by many national organisations, including the England Rugby Team, the Suffragettes, and…yes, the WI.
Hope that helps. Jerusalem was always one of my favourites!
And did those feet in ancient time Walk upon England's mountains green? And was the holy Lamb of God On England's pleasant pastures seen? And did the Countenance Divine Shine forth upon our clouded hills? And was Jerusalem builded here Among those dark Satanic mills?
Bring me my bow of burning gold! Bring me my arrows of desire! Bring me my spear! O clouds, unfold! Bring me my chariot of fire! I will not cease from mental strife Nor shall my sword sleep in my hand Till we have built Jerusalem In England's green and pleasant land'
This is the song I fell in love with in 1975 and never knew its significance until I read this thread today. From Emerson Lake and Palmer. Enjoy. http://www.youtube.com/watch?v=paIlSux-R8Y
It is the "signature" song for the Women's Institute. Hence the reference of "Jam and Jerusalem". A very funny TV show came out with just that name starrying Joanna Lumly. Also it was sung at Lady Diana's Funeral.