What was the consequence of Nestorius's refusal to recant his teachings?

The consequence of Nestorius's refusal to recant his teachings was that the Third Ecumenical Council condemned his beliefs and teachings. This council, convened in Ephesus in 431 AD, was primarily focused on addressing the controversy surrounding Nestorius's assertion that there were two distinct persons in Christ—one divine and one human—rather than the orthodox understanding of Christ as one unified person with two natures.

The council's decision to condemn Nestorius was significant as it established a clear theological stance against his views, leading to the affirmation of the title of Theotokos, or "God-bearer," for the Virgin Mary. This title emphasized the belief that Mary gave birth to Christ, who is both fully human and fully divine, thus rejecting the dichotomy that Nestorius proposed. As a result of the council's condemnation, Nestorius was effectively excommunicated from the Church, but the specific focus of this question is on the doctrinal outcome rather than the personal repercussions for Nestorius.

The condemnation by the council thus solidified the church's position on Christology and helped unify the teachings of the early Church in the face of the theological disputes of that time.