Editing Pope Pius XII (section)

===Liturgy reforms===
{{Main|Liturgical reforms of Pope Pius XII|Mediator Dei|General Roman Calendar of Pope Pius XII}}

In his encyclical ''Mediator Dei'', Pius XII links [[Catholic liturgy|liturgy]] with the last will of [[Jesus Christ]].

{{blockquote|But it is His will, that the worship He instituted and practised during His life on earth shall continue ever afterwards without intermission. For He has not left mankind an orphan. He still offers us the support of His powerful, unfailing intercession, acting as our "advocate with the Father". He aids us likewise through His Church, where He is present indefectibly as the ages run their course: through the Church which He constituted "the pillar of truth" and dispenser of grace, and which by His sacrifice on the cross, He founded, consecrated and confirmed forever.<ref>AAS, 1947, ''Mediator Dei'', p. 18</ref>}}

The Church has, therefore, according to Pius XII, a common aim with Christ himself, teaching all men the truth, and offering to God a pleasing and acceptable sacrifice. This way, the church re-establishes the unity between the [[Creator deity|Creator]] and His creatures.<ref>AAS, 1947, ''Mediator Dei'', p. 19</ref> The Sacrifice of the Altar, being Christ's own actions, conveys and dispenses divine grace from Christ to the members of the Mystical Body.<ref>AAS, 1947, ''Mediator Dei'', p. 31</ref>

[[File:Papst Pius XII., Krönung 10. Jahrestag.jpg|thumb|Pope Pius XII seated in the [[Sedia gestatoria]] in 1949]]

Bishop [[Carlos Duarte Costa]], a long-time critic of Pius XII's policies during World War II and an opponent of [[clerical celibacy]] and the [[Sacred language|use of Latin as language of the liturgy]], was [[Excommunication (Catholic Church)|excommunicated]] by Pius XII on 2 July 1945.<ref>{{cite magazine |date=23 July 1945 |title=Religion: Rebel in Rio |url=https://content.time.com/time/subscriber/article/0,33009,803605,00.html |magazine=[[Time (magazine)|Time]]}}</ref> He later established a schismatic group called the "[[Brazilian Catholic Apostolic Church]]".<ref>{{Cite news |last=Howe |first=Marvine |date=3 August 1973 |title=Ex-Priest's 'Sainthood' Irks Catholics in Brazil |language=en-US |work=The New York Times |url=https://www.nytimes.com/1973/08/03/archives/expriests-sainthood-irks-catholics-in-brazil-18-more-considered.html |access-date=1 August 2023 |issn=0362-4331}}</ref>