Matthew 1:23 declares that the birth of Jesus fulfilled a sign promised by Isaiah over 700 years before. Isaiah's original prophecy, however, was not a simple prediction of a future event. The same God who took on flesh in the person of Jesus was present with his untrusting people through centuries of perilous uncertainty. Isaiah's challenge to be "firm in faith" (v. 9) is our same challenge today. When our hearts are shaking, we steady ourselves in the heart of God, rejecting the temptation to “use God to run from God” and to seek help from any source but God.