Jeremiah 10:2-4: "Thus saith the LORD, Learn not the way of the heathen, and be not dismayed at the signs of heaven; for the heathen are dismayed at them. For the customs of the people are vain: for one cutteth a tree out of the forest, the work of the hands of the workman, with the axe. They deck it with silver and with gold; they fasten it with nails and with hammers, that it move not." (KJV).
In order to make Christianity palatable to the heathen, the Roman Church simply took Saturnalia, adopted it into Christianity, and then eventually many of the associated pagan symbols, forms, customs, and traditions were reinterpreted (i.e., "Christianized") in ways "acceptable" to Christian faith and practice. (In fact, in 375 A.D., the Church of Rome under Pope Julius I merely announced that the birth date of Christ had been "discovered" to be December 25th, and was accepted as such by the "faithful." The festival of Saturnalia and the birthday of Mithras could now be celebrated as the birthday of Christ!) The pagans flocked into the Catholic places of worship, because they were still able to worship their old gods, but merely under different names. It mattered not to them whether they worshiped the Egyptian goddess mother and her child under the old names (Isis and Horus), or under the names of the "Virgin Mary" and the "Christ-child." Either way, it was the same old idol-religion (cf. 1 Thes. 1:8-10; 5:22 -- Paul says to turn from idols, not rename them and Christianize them). Roman Catholicism's Christmas Day is nothing but "baptized" paganism, having come along much too late to be part of "the faith once delivered unto the saints" (Jude 3).
Christmas and the (Spiritual) Violation of the Ten Commandments (reverse order)
A. Do Not Covet -- Children learn to covet the gifts of others, to drool over the Christmas catalog, to drag their parents endlessly through toy stores, all in the name of "the Christmas spirit."
B. Do Not Bear False Witness -- "Jesus is the reason for the season!" is the Christian battle cry to "put Christ back in Christmas," when in actuality, there is not only no Biblical warrant for Christmas, but its roots are in pagan worship systems. Nevertheless, professing Christians lie to their children about Santa Claus, the supernatural, sorcerous false "god" of Christmas, whose "gospel" is one of works salvation along with unconditional acceptance and rewards. Parents lie to their children for years about the god-like character of Santa Claus, in effect asking them to trust in a false god and a lie, and then don't understand why later in life their children won't believe and trust in the true God, Jesus Christ.
C. Do Not Steal -- Christmas spending patterns could never stand the test of Biblical stewardship; i.e., Christians, in celebrating Christmas, "steal" the Lord's resources by ignoring their proper use; lavishly spend these resources on worthless and useless trinkets (in many cases); and withhold resources from those in need, while at the same time claiming to never have enough money to buy good Christian books, pay for home schooling, or buy Bible helps for their children. (Christians could also be helping the spiritually needy by buying and giving them tracts, books, etc.) We "steal" from our families what they need and what we owe them in order to buy gifts for those who don't need them.
D. Do Not Commit Adultery -- At this "special" time of the year, lustful thoughts are actually encouraged; e.g., teens are allowed to go to parties and stay out later, thereby having temptations put in front of them that otherwise wouldn't be there. Christmas parties for adults also encourage evil thoughts through the use of the mistletoe, etc. (According to Matt. 5, such thoughts constitute adultery. At the very least, spiritual adultery is encouraged by the "season.")
E. Do Not Murder -- Envy and hate of my brother (which, according to Matt. 5, is equal to murder) because he has more than me or because he receives a larger Christmas bonus than me, is encouraged at Christmas time. We also tend to spiritually sacrifice our children to the "god of Christmas" via greed, selfishness, etc.
F. Honor Father and Mother -- Christmas gift-giving is not an honor to parents; the term "exchanging" gifts (i.e., giving in expectation of a return) is a dead give-away of the mockery associated with this tradition.
G. Remember the Sabbath and Keep It Holy -- Although we recognize that the Lord's Day is not the "Christian Sabbath," clearly the Lord's Day is to be kept for worship and observed as such. Yet when Christmas Eve, Christmas Day, or the day after Christ-mas falls on a Sunday, most churches adjust the Lord's Day to accommodate Christ-mas, usually by canceling the regularly scheduled Sunday evening service. Most of its members are too busy or too tired to attend services anyway.
H. Do Not Take the Lord's Name in Vain -- "Christ" and "mass" are two words that are totally opposite from one another, and to connect the two is to blaspheme the name of Christ. By taking a pagan celebration, "Christianizing" it, and calling it a celebration of the birth of Christ, is most certainly taking the Lord's name in vain. (A good example of the willingness of the professing church to profane the name of the Lord would be the title of a popular children's Christmas concert production -- The Divine Ornament. Imagine, identifying our Lord with a pagan ornament to hang on a pagan tree! What insult! What blasphemy!) In addition, some professing Christians use religion ("Christ's birthday") as a cloak to cover the evils of covetousness, idolatry, greed, immorality, etc. -- all excuses to give vent to evil lusts.
I. Do Not Make Yourself Any Carved Image -- Nativity scenes, "pictures" of Christ, Christmas cards with "pictures" of Jesus, etc., all violate this command. God has given us His Word, not images, to teach us about Christ (1 Pe. 1:23; Dt. 4:12, 15-19).
J. Have No Other Gods Before Me -- The "god of Christmas" is idolatrous! Looking to the Christmas season for happiness, joy, and fulfillment, rather than through a pure, personal, and Biblical relationship with Jesus Christ, is idolatry.