The book of Isaiah stands like a great mountain in the Old Testament, and at its summit shines the Gospel of Jesus Christ. Many have rightly called it "the Gospel of the Old Testament" because it proclaims—seven centuries before Bethlehem—the good news of a coming Saviour: His birth, His character, His ministry, His sufferings, His death, and His resurrection. Isaiah speaks as a prophet, a preacher, and, at times, almost an evangelist, pointing forward to the Lord Jesus with remarkable clarity.
The Gospel Thread Running Through Isaiah
Isaiah's message can be gathered around several great themes that anticipate the New Testament revelation of Christ. Each theme is rooted in Isaiah's prophecy and confirmed by the apostles.
1. The Virgin-Born Son: God's Sign to the World
Isaiah begins the Gospel story by announcing a miraculous conception.
• Isaiah 7:14 — "Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel."
• Fulfilment: Matthew 1:22–23 quotes this directly, identifying Jesus as the promised Immanuel—God with us.
This is not merely a prediction of an unusual conception; it is the declaration that God Himself would step into human history. Isaiah's Gospel begins with grace: God comes near.
