Isaih 7 is about King Ahaz who was worried about two Assyrian kings and the fate of the Kingdom of Judah. God tried to appease his fears and offered to give Ahaz a sign, anything he wanted, even the Moon!, just so Ahaz would believe that the sing is from God.
Ahaz refuses to ask for a sign because he doesn't want to test God. God then decides to give him a sign anyway. This is where he says the young woman is with a child. Keep in mind that this is taking place 700 years before Christ! Jesus).
The (verse 16) Isaiah says that before the boy is old enough to refuse evil and choose good (we are talking anywhere from age 7-14), the land of those two kings will be forsaken and the threat to Judah will be no more.
So, chronologically it cannot be about Jesus because that would mean that Jesus was born 700 years before his New Testament birth, ore that Ahaz lived to be more than 700 years old to find out that the sign was really from God.
But you are. You have passed judgment on why he wrote it back in post 4440 where you said....These are not coincidental discoveries or prophesies, boatbums. The NT was written so that it would appear the OT is a Christian prophesy, the way the Book of Mormon was written to “prove” that it is the third authentic scripture.
You've answered the question and stated that Matthew wrote the gospel to make it appear that the OT prophecy was being fulfilled.
If it was written for such a manner, then it was deliberately written as a lie and you've essentially answered the question of whether Matthew was lying when he said that verse in Isaiah was prophecy.
Matter of fact, by stating that, you've declared that the whole NT is a fraud. If the NT is a fraud and all the NT writers were lying, including Peter and Jesus. In that case, that Jesus was a fictional character who never existed.
You've then declared that the church fathers were liars and fraudulent in writing it since Catholics claim authorship of the Bible. Therefore, everything the Catholic church claims and stands for is a fraud as well. It then becomes no different than islam which is a political ideology dressed up in religion because the church then claims authority granted by God and is deceiving the masses for what could be no other than political gain.