Celibacy of the clergy

Clerical celibacy is the requirement in certain religions that some or all members of the clergy be unmarried. These religions consider that, outside of marriage, deliberate sexual thoughts, feelings, and behavior are sinful; clerical celibacy also requires abstention from these.

Within the Roman Catholic Church, clerical celibacy is mandated for all clergy in the Latin Church except deacons who do not intend to become priests. Exceptions are sometimes admitted for ordination to transitional diaconate and priesthood on a case-by-case basis for married clergymen of other churches or communities who become Catholics, but ordination of married men to the episcopacy is excluded (see Personal ordinariate). Clerical marriage is not allowed and therefore, if those for whom in some particular Church celibacy is optional (such as permanent deacons in the Latin Church) wish to marry, they must do so before ordination. Eastern Catholic Churches either follow the same rules as the Latin Church or require celibacy for bishops while allowing priestly ordination of married men.

In the Eastern Orthodox Church and Oriental Orthodoxy, celibacy is the norm for bishops; married men may be ordained to the priesthood, but even married priests whose wives pre-decease them are not allowed to enter marriage after ordination. Similarly, celibacy is not a requirement for ordination as a deacon and in some Oriental Orthodox churches deacons may marry after ordination. For a period in the 5th and early 6th centuries the Church of the East did not apply the rule of celibacy even for ordination to the episcopate. Anglicanism and Protestantism in general do not require celibacy of its clergy and allow—or even encourage—clerical marriage.

The word "celibacy" can mean either the state of being unmarried or abstinence, especially because of religious vows, from sexual intercourse. In the canon law of the Latin Church, the word "celibacy" is used specifically in the sense of being unmarried. However, for its clergy this state of being unmarried is considered to be a consequence of the obligation to be completely and perpetually continent:

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