“As with St. Ireneaus, there is an ecclesiological and sacramental dimension to the doctrine of Recapitulation. Baptism is an essential component of the mystery and for the spiritual life, since the believer must recapitulate that which Christ Himself fulfilled and repeated in His own Recapitulation. As was the case with Sts. Ireneaus and Athanasius, one cannot separate the divine and invisible nature and therefore one cannot separate water and the Spirit into two separate baptisms or events, as this would be a kind of sacramental Nestorianism.
Ftnt. 37 This point cannot be lingered over too long, since many Evangelical Christians make just such a separation. For the Fathers, such a separation always indicates a distorted and incorrect understanding of the Incarnation. It is on the christological basis of recapitulation that infants are baptized, since not to baptize them until they reach the ‘age of reason’ or ‘accountability’ implies that communion between God and man is impossible at this stage of life. If this principle were pressed into the Incarnatin itself, it would mean that Christ only became God subsequently to His conception. Likewise, the Church’s condemnation of abortion is rooted in the recapitulational principle, since this stage of human life was united indivisibly and unconfusedly with God the Word. It is therefore contradictory to maintain at one and the same time that infants cannot be baptized, and yet to argue against abortion on the basis of an abstract principle of the ‘sanctity of life’ divorced from its Christological basis.”
Joseph P. Farrell, Introduction, The Disputation with Pyrrus of our Father among the Saints Maximus the Confessor, p. xvi.