In the reading for today, Isaiah predicts what happens centuries later, that a virgin will conceive a son and call him Emmanuel. Isaiah's message to the Jewish people is to be persistent in their hope and trust in God despite the difficulties of their journey in life.
Our life's journey is not always a smooth straight line to God. Throughout our lives, there are times of crises when we may lose hope, or it may be in the mundane that we get off track and lose sight of our ultimate goal. Lucky for us, God's patience is infinite. He does not grow weary of our innumerable stumbles and detours on our journey.