Low Furness School - a messy picture, some water, a sponge - Pentecost??

Today I went to Low Furness School.  The theme for the assembly was Pentecost.  We didn't start with a song as the story was a bit longer than normal.  I told the story of Pentecost using an idea from Bob Hartman, then explained what the Holy Spirit was using a sponge and a bucket of water and a messy picture.  The idea was that the dry sponge couldn't clean it but a wet sponge can because the water enables the sponge to do the job it was intended to do rather like the Holy Spirit in us enables us to do what God intended us to do which is to tell the world about him.  After the talk we sang Shine and then I prayed to end the assembly.