That is one of God's finest Old Testament prophets, prophesying about the son, almost 800 years before the son's arrival.

He calls this son the everlasting Father. Who else but the Trinity fits that description? Christ is the son and the Father.
We know Isaiah is talking about the God's son by the description of the son's duties that continue into Isaiah 9:7
Of the increase of his government and peace there shall be no end, UPON THE THRONE OF DAVID, and upon His Kingdom, to order it, and to establish it with judgment, and with justice from henceforth even forever. He's talking about the son of God alright.
Sunni, If you had a choice of the two religions I'd like for you to tell me why you chose the religion that can only find peace by killing everyone that doesn't share your belief? Jesus wants to remove the hatred from the Jews and Muslims and give ALL of Abraham's children a nice piece of the pie, and unite the half brothers in peace and love for one another forever.
You don't have to tell me if you don't want to, but since you had the freedom to choose, I'm curious as to what influenced your decision.