OneGod: Read the context of the verse from Matthew chapter 1 verses 18 to 23 and you'll see that Matthew was referring to Isaiah. I really dont need to take it further, the scriptures explain themselves.
You'll notice that Jesus called his Father "Abba" Father, i will give you some study info about this sometime and why Abba Father is different than just 'Father'.
Remember ... Jesus was BOTH God and Man, God-man if you like. This is one of the reason's he would pray to the Father and also called Father "God" ... Because he was FULLY HUMAN. When he died on the cross, he represented a human, because he took OUR place on the cross remember, he paid OUR PRICE FOR US. It should have been us on that cross.
I really dont need to waste my time argueing with you, Read the context of Matthew like i said.
Defination of the word Virgin from Strongs Concordance:
H5959
עלמה
‛almâh
al-maw'
Feminine of H5958; a lass (as veiled or private): - damsel, maid, VIRGIN.
This was a DUAL PROPHECY, because the sign God gave to Ahaz was not via a virgin birth, There has been only 1 virgin birth in history, thats Mary's. The Prophecy Isaiah gave is Dual because its a sign for Ahaz and a FUTURE sign for the Jews is well for their Promised deliverer, the Messiah.
Please read the scriptures in context to get their meaning, read Isaiah chapter 17, all of it, and read also Isaiah chapter 8 verses 5 to 11 properly.
AND read Matthew in context is well.