The history behind evergreens, ornaments, and holiday gift giving.
The evergreen tree was an ancient symbol of life in the midst of winter. Romans decorated their houses with evergreen branches during the New Year, and ancient inhabitants of northern Europe cut evergreen trees and planted them in boxes inside their houses in wintertime. Many early Christians were hostile to such practices. The second-century theologian Tertullian condemned those Christians who celebrated the winter festivals, or decorated their houses with laurel boughs in honor of the emperor.
Finish this article from ChristianHistory.net.