He joined the diplomatic service of the Holy See and was posted to Brazil from 1972 to 1975.[3] He then returned to Rome and worked at the Secretariat of State, first in the Section for International Organizations and then in office for information and documentation. He was named the Secretariat's Assessor for General Affairs in 1987.[1]
Sepe was appointed Secretary of the Congregation for the Clergy and Titular Archbishop of Gradum on 2 April 1992.[4] He received his episcopal consecration from Pope John Paul II on 26 April.[1] On 29 September 1992, Pope John Paul named him a member of the Pontifical Council for the Pastoral Care of Migrants and Itinerant People.[5] In an essay published the next year, he described celibacy as integral to the priesthood: "Christ willed ... to combine the virginal state with his mission as eternal priest.... We can therefore affirm that chastity and virginity are not simply additional or secondary in Christ's priestly existence, but belong to its very essence."[6]
As secretary of the Congregation for the Clergy, Sepe was responsible for organizing the celebration marking the 50th anniversary of Pope John Paul's ordination to the priesthood, which proved so successful that the Pope gave him even greater responsibility.[7] On 3 November 1997, Pope John Paul named him General Secretary of the Central Committee for the Great Jubilee of the Year 2000, which has been described as "almost certainly the most complex logistical enterprise in recent Roman memory"[7] and "a carnival such as Rome has not seen since the days of Nero".[8] He was President of Peregrinatio ad Petri Sedem from 8 November 1997 to July 2001.[1] On 18 February 1999, he was made a member of the Congregation for the Clergy.[9]
On 9 April 2001 Pope John Paul named him Prefect of the Congregation for the Evangelization of Peoples.[10] As Prefect he was ex officio the Grand Chancellor of the Pontifical Urban University.[citation needed] In 1995, as head of the Congregation, he helped implement a priest-sharing program among dioceses worldwide to help redress the geographical imbalance in vocations. He also said that the Vatican was facilitating the return of hundreds of priests who had left the active ministry and married in civil ceremonies, but who were now divorced or widowed and were "sincerely sorry" for having strayed from their vocation. In 1997 he said a relaxing of the celibacy rule for Latin Church priests would not ease the vocations crisis and would have no theological or pastoral foundation.[citation needed]
On 20 May 2006, he was appointed Archbishop of Naples.[1] With that appointment, he became a Cardinal-Priest with his deaconry elevated pro hac vice to title.[20] He was the first head of a Roman dicastery in decades to be given a diocesan appointment.[citation needed][a] He disputed the idea that his reassignment to Naples from the Roman Curia represented a demotion. Sepe said that when Benedict asked for his reaction in advance, he agreed because it was how he wanted to end his career.[21] Others thought Pope Benedict preferred to have a prelate from a traditional missionary country, in this instance Indian Cardinal Ivan Dias, lead the Congregation responsible for missionary work.[7][b]
In 2007 he called for an end to gang violence.[23]
In June 2010, Sepe was under investigation by Perugia's public prosecutor's office for financial corruption in connection with the renovation and sale of some of the Congregation's properties.[24] Media reports alleged that during his time as prefect, he sold property owned by the Congregation at discounted prices to politicians positioned to help the Congregation.[8] Sepe said that he has "nothing to hide" and he was expected to waive the diplomatic immunity afforded by his Vatican passport and meet investigators.[21][25]
In March 2018 Sepe forwarded to the Vatican a 1,200-page dossier compiled by Francesco Mangiacapra, a male escort, that purported to identify 40 actively gay Catholic priests. He said: "those who have erred must pay the price, and be helped to repent for the harm done".[26]
^Sepe, Crescenzio (1993). "The Relevance of Priestly Celibacy Today". In Sanchez, Jose (ed.). For Love Alone: Reflections on Priestly Celibacy. Slough, UK: St. Paul's. pp. 66–82. Quoted in Selin, Gary (2016). Priestly Celibacy: Theological Foundations. CUA Press. p. 111. ISBN9780813228419. Retrieved 13 April 2020.