There are many claims in the gospels that an incident is fulfilling an Old Testament prophesy but they are never true. The Jewish OT did not prophesy an supernatural son of God who would perform miracles, which is why Judaism has always rejected Christianity.
The best-known is that line from Isaiah which is so beautifully rendered in Handel's Messiah: 'Behold, a virgin shall conceive and bear a son, and shall call his name Immanuel, God With Us'.
First of all 'virgin' is mistranslation of the Hebrew word 'almah' which actually means 'a young spinster'. The Hebrew for 'virgin' is 'betulah'.
If you read the whole passage you will see that Isaiah is telling King Ahaz that if a woman had a baby tomorrow then by the time he became old enough to know right from wrong Ahaz's enemies (the kings of Syria and Israel) would be overcome.
Nothing to do with Jesus, but the Church still quotes it, relying on the fact that most Christians don't read their bibles.