Jesus was not born on December 25th, it doesn't say when he was born but many scholars believe it was most probably September or October, they get this date from hints in the NT, the bottom is that no one today knows the date of his birth.
Your arguements oneGod are stupid, let's look at them.
All Christian themes are found in the Old Testament and the OT was begun around 2000 B.C. and completed around 400 B.C.
Son Of God Theme - Zech. 12:10
"And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his firstborn"
Born Of A Virgin Theme - Isaiah 7:14
"Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel"
Crucifixion Theme - Psalm 22
"1 My God, my God, why hast thou forsaken me? why art thou so far from helping me, and from the words of my roaring?
2 O my God, I cry in the daytime, but thou hearest not; and in the night season, and am not silent.
3 But thou art holy, O thou that inhabitest the praises of Israel.
4 Our fathers trusted in thee: they trusted, and thou didst deliver them.
5 They cried unto thee, and were delivered: they trusted in thee, and were not confounded.
6 But I am a worm, and no man; a reproach of men, and despised of the people.
7 All they that see me laugh me to scorn: they shoot out the lip, they shake the head, saying,
8 He trusted on the LORD that he would deliver him: let him deliver him, seeing he delighted in him.
9 But thou art he that took me out of the womb: thou didst make me hope when I was upon my mother’s breasts.
10 I was cast upon thee from the womb: thou art my God from my mother’s belly.
11 Be not far from me; for trouble is near; for there is none to help.
12 Many bulls have compassed me: strong bulls of Bashan have beset me round.
13 They gaped upon me with their mouths, as a ravening and a roaring lion.
14 I am poured out like water, and all my bones are out of joint: my heart is like wax; it is melted in the midst of my bowels.
15 My strength is dried up like a potsherd; and my tongue cleaveth to my jaws; and thou hast brought me into the dust of death.
16 For dogs have compassed me: the assembly of the wicked have inclosed me: they pierced my hands and my feet.
17 I may tell all my bones: they look and stare upon me.
18 They part my garments among them, and cast lots upon my vesture.
19 But be not thou far from me, O LORD: O my strength, haste thee to help me.
20 Deliver my soul from the sword; my darling from the power of the dog.
21 Save me from the lion’s mouth: for thou hast heard me from the horns of the unicorns.
22 I will declare thy name unto my brethren: in the midst of the congregation will I praise thee.
23 Ye that fear the LORD, praise him; all ye the seed of Jacob, glorify him; and fear him, all ye the seed of Israel.
24 For he hath not despised nor abhorred the affliction of the afflicted; neither hath he hid his face from him; but when he cried unto him, he heard.
25 My praise shall be of thee in the great congregation: I will pay my vows before them that fear him.
26 The meek shall eat and be satisfied: they shall praise the LORD that seek him: your heart shall live for ever.
27 All the ends of the world shall remember and turn unto the LORD: and all the kindreds of the nations shall worship before thee.
28 For the kingdom is the LORD’S: and he is the governor among the nations.
29 All they that be fat upon earth shall eat and worship: all they that go down to the dust shall bow before him: and none can keep alive his own soul.
30 A seed shall serve him; it shall be accounted to the Lord for a generation.
31 They shall come, and shall declare his righteousness unto a people that shall be born, that he hath done this"
The Blood Atonement Theme - Lev. 17:11
"For the life of the flesh is in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that maketh an atonement for the soul"
Resurrection Theme - Psalm 16:10
"For thou wilt not leave my soul in hell; neither wilt thou suffer thine Holy One to see corruption"
Salvation By Faith Theme - Hab. 2:4
"Behold, his soul which is lifted up is not upright in him: but the just shall live by his faith"
Here's a big list from the Old Testament, all fulfilled in the New Testament.
* Ascension of Jesus to the right hand of God - Ps. 110:1
* Atonement by blood - Lev. 17:11
* Begotten Son - Psalm 2:7
* Crucifixion - Psalm 22:11-18; Zech. 12:10
* Eternal Son - Micah 5:1-2; Psalm 2:7
* God among His people - Isaiah 9:6; 40:3
* Incarnation of God - 1) Ex 3:14; 2) Ps. 45:6 Isaiah 9:6 Zech. 12:10
* Only Begotten Son - Gen. 22:2
* Resurrection of Christ - Psalm 16:9-10; 49:15; Is. 26:19
* Return of Christ - Zech. 14:1-5; Mic. 1:3-4
* Sin offering - Ex. 30:10; Lev. 4:3
* Son of God - Psalm 2:7
* Substitutionary Atonement - Isaiah 53:6-12; Lev. 6:4-10,21
* Virgin Birth - Isaiah 7:14
*** If the argument that pagan mythologies predated Christian teachings and therefore Christianity borrowed from them is true, then it must also be truth that the pagan religions borrowed from the Jewish religion because it is older than they are! ***
So, your arguement my friend is dead.