Carmel
You can't be that unaware of the number of scriptures that proscribe pagan pactices. Of course, Christmas was a fourth century invention. But it is clear that early Christians did not celebrate the Saturnalia of the Romans or the Solis Invicti of the pagans. Rather, they followed the counsel of Paul.
"Do not be idolaters, as some of them were; as it is written: 'The people sat down to eat and to drink and got up to indulge in pagan revelry...." 1 Corinthians 10th chapter.