The Christmas tree is a variation of the hanging of a victim on a tree.As regards Jesus Christ, maybe the crucifix is pine wood?

pine wood has NOTHING to do with Jesus Christ's tie with Christmas

https://carljungdepthpsychologysite.blog/2020/10/12/the-hanging-of-the-victim-on-a-tree-was-a-religious-rite/#.YbJfXZHP3UQ 'The hanging of the victim on a tree was a religious rite…'

https://www.youtube.com/watch?v=qApsAPnoH7c 'Laurel & Hardy ~ 'The trail of The Lonesome Pine'. (In Colour)'