|This is not Jesus but Mithras|
Everything about Christmas is a total mockery against GOD who created heaven and earth. All was contrary to what the Bible teaches from Nativity scene to Christmas tree. Dec. 25 in itself was actually the b-day of the sun w/c ancient Roman celebrate as the feast of Saturnalia. The Nativity scene was a shocking replica of a pagan ceremony from Mithraic Religion, with detail as the miraculous virgin birth to the infant birth of the "Sun".
Jesus apostle was very clear in avoiding those practices and never endorse the celebration of Jesus birth. Foremost, it is geographically impossible that Jesus birth occur in winter. A census for Jerusalem as an ordinance by Augustus Caesar (Luke 2:1) would be foolish if travel was almost impossible and would the shepherds stay-out in the open to watch their flocks when the land was covered with snow (v.8)
Granting we don't know exactly when was Jesus born, so why not celebrate it instead base on known traditions. But the celebrant we suppose to honor said the scripture cannot be broken (John 10:35) and in Deut. 12:29-32 it strictly warns against adopting pagan worship custom to honor the true God.
In fact, the bible is very specific if it wants a feast to be celebrated. Early Christians have died fighting against these causes, they died because they don't want to celebrate Saturnalia disguised as Christ b-day.
"And in vain they worship Me, teaching as doctrines the commandment of men." (Mark 7:7) Further Daniel inspired by God to prophesy several centuries before Christmas that religious men would attempt to change "Times and law" including God's festival season.
Now are these harmless traditions? "For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. Whosoever shall break one of these least commandment, and shall teach men so he shall be called the least in the kingdom of heaven" Mat. 5:17
Next if the Lord willing I will discuss the pagan practice called "Easter". How it has nothing to do with Resurrection of Jesus Christ.
English Standard Version (ESV)