"The traditional Christmas tree is a very ancient custom which exalts the value of life, as in winter the evergreen becomes a sign of undying life.
In general the tree is decorated and Christmas gifts are placed under it. The symbol is also eloquent from a typically Christian point of view: it reminds us of the 'tree of life' (Genesis 2:9), representation of Christ, God's supreme gift to humanity.
The message of the Christmas tree, therefore, is that life is 'ever green' if one gives: not so much material things, but of oneself: in friendship and sincere affection, and fraternal help and forgiveness, in shared time and reciprocal listening."
Pope St. John Paul II