Moravians affirm Isaiah 7:14 as a prophetic sign of the Messiah's coming and virgin birth. The passage is understood as God's gracious promise to Ahaz, pointing beyond immediate historical circumstances to the ultimate Savior.

In Moravian theology, the virginal birth of Christ testifies to God's gracious initiative in salvation and to the uniqueness of the Incarnation. Zinzendorf and the Moravian tradition emphasized that Christ's birth was an act of God's love reaching into human history. This prophecy and its fulfillment in Jesus exemplify the Moravian conviction that God is constantly drawing humanity into relationship with himself.