You as a believer must answer this for your own home observing the instruction of Colossians 3:17, “Whatever you do or say, do it as a representative of the Lord Jesus, giving thanks through him to God the Father.” No matter what day you are observing, it should be to the honor and glory of God the Father.
Whether we display Christmas trees or not, we honor the true meaning of Christmas by celebrating it as an opportunity to renew our minds to the fact that God’s love was lived out before us in the person of Jesus Christ. No longer do we see Him as just a little baby, but a full grown man raised from the dead, seated at the right hand of Father God praying for us every moment of the day. We give gifts and share our love for one another just as God shared His love and gave us the greatest gift of all—Jesus. We spend this time as a worship and praise to our God.
It’s true that historically some people cut trees from the forest to shape them and adorn them into a god (Jeremiah 10:2-5). If you were to place a Christmas tree in your home for the same reason—to worship it as a pagan god, you would be the same as they were. However, just to have a Christmas tree in your home does not make you a heathen, nor does it mean you worship it anymore than having a picture on the wall. It only becomes a seasonal decoration.
Colossians 2:16 says not to let people judge you of these things. So again we will remind you to allow the Holy Spirit to be your guide. If you will always keep Christ as the center of each day, then every day belongs to the Lord.