At the turn of the 19th Century, there was a little Shepherd boy who used to come to Sunday school but was not very good in learning.
His Sunday school teacher taught him the first five words of the 23rd Psalm. "The Lord is my Shepherd" (on "Shepherd" make a fist with your right hand around your fourth finger on left hand!).
It was a very bleak winter and the little Shepherd boy was caught out in the cold.
When they found his body he had his fourth finger (show fourth finger enclosed by the fist of his right hand) He realised who his shepherd was.