I find it interesting that Matthew 1 has come up so many times in this discussion because it contains what I think is one of the most telling passages related to the later redaction of the Messiah tales. It shows a clear example of how the texts and tales were manipulated after the fact to support a later view.
If we examine Matthew 1:22-23 we find.
22: Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying,
23: Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
These two lines are totally different than anything else in Matthew 1 and if removed, the story flows smoothly. They are almost an aside, a commentary by some narrator or bard to make a point. It seems likely that these were added at a much later date and were not part of the original Matthew 1 story.
Here are the two versions, with and without 22-23.
18: Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
19: Then Joseph her husband, being a just man, and not willing to make her a publick example, was minded to put her away privily.
20: But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
21: And she shall bring forth a son, and thou shalt call his name JESUS: for he shall save his people from their sins.
24: Then Joseph being raised from sleep did as the angel of the Lord had bidden him, and took unto him his wife:
25: And knew her not till she had brought forth her firstborn son: and he called his name JESUS.
Note that this is a smoothly flowing tale. It is full and complete and steps through the events without interuption.
Now here it is with the two lines restored.
8: Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
19: Then Joseph her husband, being a just man, and not willing to make her a publick example, was minded to put her away privily.
20: But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
21: And she shall bring forth a son, and thou shalt call his name JESUS: for he shall save his people from their sins.
22: Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying,
23: Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
24: Then Joseph being raised from sleep did as the angel of the Lord had bidden him, and took unto him his wife:
25: And knew her not till she had brought forth her firstborn son: and he called his name JESUS.
Notice the break. The whole tenor of the piece changes with the emphasis moving from what actually happened to a connection with the OT.
Aslan is not a Tame Lion