This article largely discusses presence of openly lesbian, gay, bisexual, and transgender and queer bishops in churches governed under episcopal polities. The existence of LGBTQ bishops in the Anglican, Lutheran, Methodist and other traditions is a matter of historical record, though never, until recently, were LGBTQ clergy and bishops ordained by any of the main Christian denominations. Homosexual activity was engaged in secretly. When it was made public, official response ranged from suspension of sacramental duties to laicisation.
The higher prominence given today to the presence of LGBTQ clergy, including bishops, in the life of the church reflects broader issues, both socially and ecclesiologically (see List of Christian denominational positions on homosexuality), concerning issues of social tolerance and the relationship between social change and doctrinal development. The issue has attracted greater attention in recent years following the development of the gay rights movement, and the increasing discussion within some Christian churches over the inclusion of gay clergy in senior positions.
It was customary in the past for individuals – whether clergy or not – to remain secretive (in the closet) about their sexual orientation and activity. This was mainly because there was generally low tolerance for homosexuality across society, and those caught faced severe criminal sanctions (often including death). Nor is it straightforward to identify individuals before the 19th century as homosexual or "gay" in the modern sense of the word.
Nevertheless, as far back as the sixth century (CE) the Greek chronicler John Malalas wrote about Isaiah, Bishop of Rhodes and Alexander, Bishop of Diospolis in Thracia who had been punished by the Prefect of Thrace (Victor) for "homosexual practices". Isaiah was tortured severely and exiled, while Alexander had his genitals amputated and was subsequently paraded around the city on a litter. As a result, the Emperor Justinian decreed that all caught for pederasty should have their genitals amputated.