I can make a correlation between the material world and the spiritual world with the Christmas trees. At the Spiritual Center, we always decorate a tree and set up a nativity scene with a cup of candies and chocolates for children eat.
The parents lead the children to the Center to see the Christmas tree, the nativity scene, eat some candies and chocolates and, especially to listen about Baby Jesus. While they are at the Center, they listen beautiful stories about a baby which born in Bethlehem and brought to the world the teachings of eternal life. These things create in their spirits the fortress that will protect them of the dangers of life.