With only minor exceptions no developed countries permit marriage among more than two people, nor do the majority of countries give legal protection (e.g., of rights relating to children) to non-married partners.Individuals involved in polyamorous relationships are generally considered by the law to be no different from people who live together, or "date", under other circumstances.
On August 29, 2017, the Council on Biblical Manhood and Womanhood released a manifesto on human sexuality known as the "Nashville Statement".
The statement was signed by 150 evangelical leaders, and includes 14 points of belief.
Swingers and polyamorous people alike might engage in secret infidelities, though this is no more acceptable than in monogamy.
Kerista was a new religion that was started in New York City in 1956 by John Peltz "Bro Jud" Presmont; throughout much of its history, Kerista was centered on the ideals of polyfidelity and creation of intentional communities.
Some Jews are polyamorous, but mainstream Judaism does not accept polyamory; however, Sharon Kleinbaum, the senior rabbi at Congregation Beit Simchat Torah in New York, has said that polyamory is a choice that does not preclude a Jewishly observant and socially conscious life.
La Veyan Satanism is critical of Abrahamic sexual mores, considering them narrow, restrictive and hypocritical.
Both are banned under Sections 205–206 of the Crimes Act 1961.
In jurisdictions where same-sex marriage proper exists, bigamous same-sex marriages fall under the same set of legal prohibitions as bigamous heterosexual marriages.
The Eleven Satanic Rules of the Earth only give two instructions regarding sex: "Do not make sexual advances unless you are given the mating signal" and "Do not harm little children," though the latter is much broader and encompasses physical and other abuse.