In Abrahamic religions, sexual intercourse is considered a sacred act between husband and wife that must be limited to penile-vaginal contact for procreation and pleasure. Anal sex is seen as an unnatural act that defies divine design and purpose and is therefore strictly forbidden. The Quran says "Your wives are your fields, so go into them as you please" (2:223), meaning that husbands can have intercourse with their wives however they like within marriage.
Anal sex is specifically mentioned as being a punishable offense in Sura 4:18, which says that homosexuals will be thrown in hellfire for committing "shameful acts."
The Bible also condemns anal sex, but not all scholars agree on its exact prohibitions. In Leviticus 18:22, it states that "You shall not lie down with a male as one lies with a woman; it is an abomination," which some interpret to mean that anal sex is forbidden.
Others argue that this verse refers to temple prostitution or idolatry, rather than consensual sexual activity between two men. Similarly, 1 Corinthians 6:9 lists homosexuality as one of many sins that disqualify people from inheriting God's kingdom, though it does not specifically mention anal sex.
Religious leaders and theologians justify these prohibitions by citing various reasons. Some claim that anal sex is against nature because it violates the natural order and cannot result in pregnancy. Others argue that it is degrading and humiliating to both partners and runs counter to the dignity of human sexuality. Some even link it to pagan rituals or idolatrous practices. But all Abrahamic religions ultimately view anal sex as a perversion of God's design and purpose for sex, which is procreation and intimacy within marriage.
Abrahamic religions consider anal sex to be immoral due to its deviation from divine intention and design for human sexuality. They believe it is unnatural, degrading, and devoid of spiritual significance. Theological justifications include arguments about naturalness, dignity, and sacredness of marriage.