The Paradise Tree:
There is a very old and charming European custom of decorating a fir tree with apples and small white wafers representing the Holy Eucharist. These wafers were later replaced by little pieces of pastry cut in the shapes of stars, angels, hearts, flowers, and bells. Eventually other cookies were introduced bearing the shapes of men, birds, roosters and other animals.
In the Middle Ages, about the 11th century, religious theater was born. One of the most popular plays, the German mystery play, concerned Adam and Eve, their fall and expulsion from the Garden of Eden--from the Early Paradise. The Garden of Eden was represented by a fir tree hung with apples. It represented both the Tree of Life and the Tree of Discernment of Good and Evil which stood in the center of Paradise. The play ended with the prophecy of a coming Savior, and for this reason, this particular play was often enacted during Advent.
The one piece of scenery--the "Paradeisbaum (the Paradise Tree) became a popular object, and was often set up in churches, and eventually in private homes as well. It became a symbol of the Savior. Since the tree represented not only Paradise, and man's fall, but also the promise of salvation, it was hung not merely with apples, but also with bread or wafers (Holy Eucharist) and often sweets (representing the sweetness of redemption). In sections of Bavaria, fir branches and little trees, decorated with lights, apples and tinsel are still called Paradeis.
The German and English immigrants brought the Christmas tree to America. Fruits, nuts, flowers, and lighted candles adorned the first Christmas trees, but only the strongest trees could support the weight without drooping; thus, German glassblowers began producing lightweight glass balls to replace heavier, natural decorations. These lights and decorations were symbols of the joy and light of Christmas. The star that tops the tree is symbolic of the "Star in the East".