Armstrongism affirms the traditional reading of Isaiah 7:14 as prophecy of the virgin birth of Christ. Despite their non-Trinitarian Christology, Armstrongists maintain the claim that Jesus was miraculously conceived by the Holy Spirit without a human father. This is consistent with their affirmation of Christ's unique role in God's plan.

The virgin birth is understood not as proving eternal divinity (as traditional theology holds) but as establishing Jesus' unique origin in God's redemptive plan. Mary's virginity and the miraculous conception are affirmed as central to the narrative of Jesus' coming.