None of the comments to refute the remarkably able studies Apostolic Origins of Priestly Celibacy by Fr. Christian Cochini, S.J.(Ignatius, San Francisco, 1990); The Case for Clerical Celibacy, by Alfons Maria Cardinal Stickler (Ignatius, San Francisco, 1995); Celibacy in the Early Church, by Fr. Stefan Heid, (Ignatius, San Francisco, 2000), have any substance as there is nothing to approach the competence of these studies.
“In 1878-9 Gustav Bickell published a bold thesis: the obligation of priestly celibacy dates from the time of the Apostles; no priest could marry; and when a married man was ordained, he was required to abstain permanently from the use of the marriage. That was the rule in both East and West from the earliest beginnings of the Church until the seventh century.
“Clerics were often chosen from among married older men. After ordination they were required to abstain from conjugal intercourse. In effect then, they were not married. *Qui habent uxores, tamquam non habentes sint. *“Let those who are married live as if they do not have wives”. Pope Leo the Great in 458 AD borrowed those words of Saint Paul in order to describe the celibacy of the clergy.” *. The Origin Of Priestly Celibacy, by Hugh Ballantyne, June 2003]
“The earliest trace of a law (4) of ecclesiastical celibacy - based, however, on long established custom (5) - is found in the 33rd canon of the Council of Elvira, held at the beginning of the fourth century when Christians were still being actively persecuted. This law only made obligatory what the gospels and the apostolic preaching had already shown to be something like a natural requirement.” (6) [Encyclical Ad Catholici Sacerdotii, Pius XI, 1935, AAS 28 (1936) 25].
Pius XI, 43: “But the Christian priesthood, being much superior to that of the Old Law, demanded a still greater purity. The law (4) of ecclesiastical celibacy, whose first written traces pre-suppose a still earlier unwritten practice (7), dates back to a canon of the Council of Elvira, at the beginning of the fourth century, when persecution still raged….The Second Council of Carthage at the end of the fourth century declared:’ What the Apostles taught, and the early Church preserved, let us too, observe.’ "
Pope St John Paul II and the Bishops’ Synod on the formation of priests in the circumstances of the present day resulted in Pastores Dabo Vobis, 1992 – absolutely against changing that Apostolic Norm.