The Christmas tree occupies a central place in Christmas celebrations around the world, and its association with the festival goes back many centuries. Although the use of the Christmas tree is not specifically linked to any Christian doctrine, its adoption within the celebration of Christmas by Christians has developed over time.

The origin of the Christmas tree tradition is often attributed to 16th-century Germany. Some historical accounts claim that Martin Luther, the Protestant reformer, was the first to decorate a tree to celebrate Christmas. According to legend, on his way home one winter's evening, Luther was captivated by the beauty of the stars twinkling through the branches of a Christmas tree. Inspired by this vision, he cut down a tree, set it up in his house and placed lit candles on the branches to symbolise the stars.

However, the more widespread adoption of the Christmas tree as a symbol of Christmas is often associated with older traditions, particularly those linked to pagan rites. The Scandinavians, for example, used to erect trees of life, often fir trees, at their celebrations to symbolise eternal life. The early Christians, seeking to convert these populations, sometimes incorporated these existing symbols into their own celebrations.

Over time, the Christmas tree tradition spread throughout Europe and eventually crossed the oceans to become a common practice throughout the world. The tree's decorations, initially simple, evolved to include a variety of ornaments such as baubles, garlands, lights, and sometimes even nativity scenes depicting the Nativity.

For Christians, the Christmas tree has several symbolic meanings. It is often interpreted as a symbol of eternal life, representing the promise of life through the birth of Christ. The lights on the tree can symbolise the light of the world brought by Jesus Christ. The triangular shape of the tree is also interpreted by some as a representation of the Holy Trinity.

However, it is important to note that not all Christian communities adopt the Christmas tree tradition in the same way. Some religious groups prefer to focus more on elements more explicitly linked to the Nativity in their decorations and celebrations. Despite this, the Christmas tree remains an emblematic element of Christmas celebrations, uniting families and communities in the spirit of the season.