==Evergreen = Pagan Tradition=
Evergreens became Christmas trees in an act known as syncretism, where by the traditions of one culture are fused within another. The green trees came to represent Life/Goodness in the middle of darkness, that is God coming into a world. But in ancient times during the solstice all sorts of hedonistic behaviour was done and the tree represented something else.
“Long before Christianity appeared, people in the Northern Hemisphere used evergreen plants to decorate their homes, particularly the doors, to celebrate the Winter Solstice. On December 21 or December 22, the day is the shortest and the night the longest. Traditionally, this time of the year is seen as the return in strength of the sun god who had been weakened during winter — and the evergreen plants served as a reminder that the god would glow again and summer was to be expected.
The solstice was celebrated by the Egyptians who filled their homes with green palm rushes in honor of the god Ra, who had the head of a hawk and wore the sun as a crown. In Northern Europe, the Celts decorated their druid temples with evergreen boughs which signified everlasting life. Further up north, the Vikings thought evergreens were the plants of Balder, the god of light and peace. The ancient Romans marked the Winter Solstice with a feast called Saturnalia thrown in honor of Saturn, the god of agriculture, and, like the Celts, decorated their homes and temples with evergreen boughs.
It’s worth mentioning at this point that Saturnalia was the most important celebration in Roman life. It was a week-long lawless celebration held between 17 and 25 December in which no one could be prosecuted for injuring or killing people, raping, theft — anything usually against the law really. But although a lot of people blew off steam by taking advantage of the lawlessness, Saturnalia could also be a time for kindness. During Saturnalia, many Romans practiced merrymaking and exchange of presents.”
https://www.zmescience.com/science/history-science/origin-christmas-tree-pagan/