God gave a sign to that moment in time, but there was a second fulfillment to come. The sign would be for King Ahaz and the benefit of the whole "house of David." Note that this sign would be given by the Lord Himself. The sign would be that of a virgin who would bear a son named Immanuel, meaning God with us. (vv.14-16). Of course, we may assume that this sign had an immediate fulfillment for the king and the people of that day. Most likely Isaiah’s wife was a virgin before she conceived her first son, or else some other virgin woman would get married and bear a son whom she and the father would name "God with us." Throughout the years while the child grew into manhood, people would be reminded of God's promise to always be with them if they would simply trust Him. Note that the child would be reared in poverty, reared during a time when only the curds of milk and honey were available for food. It would be a time of national crisis. Notice, too, the promise of God: when the child was old enough to know right from wrong, approximately a two-year period, both Syria and Israel would be destroyed. What a wonderful promise from the Lord to King Ahaz and the people of Judah.
But even more wonderful is the ultimate fulfillment of this prophecy, which is given to the people of all succeeding generations. The prophecy finds its ultimate fulfillment in Jesus Christ, who was born of the virgin Mary (Mt.1:22-23)