The Waldensian tradition affirms Isaiah 7:14 as a messianic prophecy of the virgin birth of Jesus Christ. The Waldensians, in their medieval and Reformation iterations, inherited and affirmed the orthodox doctrine of Christ's virginal conception through Mary. This interpretation aligns with the broader Christian tradition and is grounded in the literal reading of both the Isaiah text and the Gospel accounts of Jesus' birth.

The virgin birth is theologically significant for the Waldensians because it attests to the supernatural intervention of God in history and to the sinlessness of Christ. Jesus, born of a virgin without the normal transmission of fallen Adamic nature, enters history as the spotless Lamb of God capable of making a perfect atonement for sin. The virgin birth is a sign of hope — God's redemptive action breaking into human history through a miraculous birth.

For the Waldensians, the affirmation of the virgin birth is inseparable from their commitment to scriptural authority and apostolic tradition. The text validates the two-nature Christology and the doctrine of Christ as both fully human (born of Mary) and fully divine (conceived by the Holy Spirit).