Some discussion abounds on the internet about whether Dec. 25 is the actual birth date of Jesus. We don’t know the actual date; Scripture does not tell us. If a Christian does not want to celebrate this day, that is okay. But if a Christian denies who was born in Bethlehem and the importance of that in the Christian faith, then that is not okay.
In freedom, this day is set aside to remember the fact that God did take on human flesh, becoming human (incarnation). This is one of the mysteries of the Christian faith (along with the Trinity). The incarnation is a stumbling block for many. But it is part of the foundation of the Christian faith.
C.S. Lewis wrote on the Incarnation of Christ:
In the Incarnation God the Son takes the body and human soul of Jesus, and, through that, the whole environment of Nature, all the creaturely predicament, into His own being. So that “He came down from Heaven” can almost be transposed into ”Heaven drew earth up into it,” and locality, limitation, sleep, sweat, footsore weariness, frustration, pain, doubt, and death, are, from before all worlds, known by God from within. The pure light walks the earth; the darkness, received into the heart of Deity, is there swallowed up. Where, except in uncreated light, can the darkness be drowned?
Likewise, as Christians we are not called upon to prove the incarnation, nor can we. Rather, we take this opportunity to proclaim the birth of Jesus. So, let’s return to the text of Scripture and read/hear this once again. And rejoice with the angels, the shepherds, Mary, and Joseph. And then rejoice in how this fits into all of God’s plan for redeeming humans.
In those days Caesar Augustus issued a decree that a census should be taken of the entire Roman world. (This was the first census that took place while Quirinius was governor of Syria.) And everyone went to their own town to register.
So Joseph also went up from the town of Nazareth in Galilee to Judea, to Bethlehem the town of David, because he belonged to the house and line of David. He went there to register with Mary, who was pledged to be married to him and was expecting a child. While they were there, the time came for the baby to be born, and she gave birth to her firstborn, a son. She wrapped him in cloths and placed him in a manger, because there was no guest room available for them.
And there were shepherds living out in the fields nearby, keeping watch over their flocks at night. An angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were terrified. But the angel said to them, “Do not be afraid. I bring you good news that will cause great joy for all the people. Today in the town of David a Savior has been born to you; he is the Messiah, the Lord. This will be a sign to you: You will find a baby wrapped in cloths and lying in a manger.”
Suddenly a great company of the heavenly host appeared with the angel, praising God and saying,
“Glory to God in the highest heaven,
and on earth peace to those on whom his favor rests.”
When the angels had left them and gone into heaven, the shepherds said to one another, “Let’s go to Bethlehem and see this thing that has happened, which the Lord has told us about.”
So they hurried off and found Mary and Joseph, and the baby, who was lying in the manger. When they had seen him, they spread the word concerning what had been told them about this child, and all who heard it were amazed at what the shepherds said to them. But Mary treasured up all these things and pondered them in her heart. The shepherds returned, glorifying and praising Goda for all the things they had heard and seen, which were just as they had been told. (Luke 2:1-20 NIV)
The fact and importance of God taking on flesh appears throughout the New Testament.
Who, being in very nature God,
did not consider equality with God something to be used to his own advantage;
rather, he made himself nothing
by taking the very nature of a servant,
being made in human likeness.
And being found in appearance as a man,
he humbled himself
by becoming obedient to death—
even death on a cross!
Therefore God exalted him to the highest place
and gave him the name that is above every name,
that at the name of Jesus every knee should bow,
in heaven and on earth and under the earth,
to the glory of God the Father. (Philippians 2:5-11 NIV)
But when the set time had fully come, God sent his Son, born of a woman, born under the law, to redeem those under the law, that we might receive adoption to sonship. (Galatians 4:4-5 NIV)
But when the kindness and love of God our Savior appeared, he saved us, not because of righteous things we had done, but because of his mercy. He saved us through the washing of rebirth and renewal by the Holy Spirit, whom he poured out on us generously through Jesus Christ our Savior, so that, having been justified by his grace, we might become heirs having the hope of eternal life. (Titus 3:4-7 NIV)
Since the children have flesh and blood, he too shared in their humanity so that by his death he might break the power of him who holds the power of death—that is, the devil— and free those who all their lives were held in slavery by their fear of death. For surely it is not angels he helps, but Abraham’s descendants. For this reason he had to be made like them, a fully human in every way, in order that he might become a merciful and faithful high priest in service to God, and that he might make atonement for the sins of the people. Because he himself suffered when he was tempted, he is able to help those who are being tempted. (Hebrews 2:14-18 NIV)