Yes, it’s okay for Christians to have a Christmas tree–it won’t turn you into a pagan.
https://chalcedon.edu/resources/articles/the-christian-christmas-tree-2
The Christmas tree, Mark Rushdoony explained in 2018, is an allusion to the Biblical Tree of Life–a key image in both Genesis and Revelation. The Tree of Life is Jesus Christ. We partake of God’s grace in Jesus Christ.
We don’t have to surrender Christmas!
Just keep the cat away from the tinsel.
Mark Rushdoony wrote this for the Chalcedon magazine in 2001, and it will serve us well today. It’s a little long, but stick with it: given the fallen world’s growing hostility to Christian faith, we want to hang on to Christmas–and reclaim it for Our Lord and for His people.
https://chalcedon.edu/magazine/the-christian-christmas-tree
Simply put, it’s okay for us to have a Christmas tree. Throughout the Bible, from Genesis to Revelation, the tree symbolizes the Tree of Life: and the Tree of Life is also Jesus Christ. That trees have been misused by pagans, unbelievers, and secularists does not invalidate it as a Christian symbol. It’s ours, God gave it to us, and we ought to keep it.