Jeremiah 10: 1-5 does talk about cutting down a tree and decorating it. God and Idols 1 Hear what the LORD says to you, O house of Israel. 2 This is what the LORD says: "Do not learn the ways of the nations or be terrified by signs in the sky, though the nations are terrified by them. 3 For the customs of the peoples are worthless; they cut a tree out of the forest, and a craftsman shapes it with his chisel.
4 They adorn it with silver and gold; they fasten it with hammer and nails so it will not totter.
5 Like a scarecrow in a melon patch, their idols cannot speak; they must be carried because they cannot walk. Do not fear them; they can do no harm nor can they do any good."
This isn't talking about a christmas tree. The verse talks about taking a tree from the forest and carving it because it is explaining the process of carpentry. That is, creating an idol. A Christmas tree in and of itself is not an idol, and is not worshiped. There is nothing wrong with it.