The Old Catholic Church affirms that Isaiah 7:14 is a messianic prophecy of the virgin birth of Jesus Christ, following traditional interpretation maintained in Catholic intellectual tradition. Old Catholics maintain doctrinal continuity with Catholic theology on Christological matters.

Old Catholic interpretation aligns with patristic tradition and medieval scholastic theology in reading Isaiah 7:14 as fulfilled in Mary's virginal conception of Jesus. This prophecy is understood as a sign of the Messiah's divine origin and is cited in liturgy and theology.