Here is some info on how at least come fundamentalist Christians view the issue, as from the website which first made me ask the question:
http://vanguardmag.com/kernels.htm
The Bible states that the marriage bed is undefiled. Does this mean that anything goes; more specifically, is oral and anal sex okay? See special note immediately following this article.
ANSWER: Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge. (Heb. 13:4) Dissecting the scripture with some literacy, the writer states that the marriage bed is undefiled in that a husband may enter into his wife; this was ordained by God from the beginning. However, whoremongers and adulterers, those who engage in sex outside of marriage, will be judged. This answers the first part of the question.
In order to understand the sentiment expressed in the second part, Is oral and anal sex okay? one has to rewrite the question from a Biblical perspective, Is sodomy okay? Sodomy is anal or oral copulation with a member of the opposite sex (or in homosexuality, a member of the same sex).
Now oral and anal copulation has been a sin from the beginning—it is called “sodomy.” Beloved, do you think that marriage disannuls the commandment? Of course not. In short, sodomy is a corruption of the marriage bed. Corruption stems from a Perverse spirit. Perverse—“contrary to what is right or good; perverted.” Perversion does not lead to fruitfulness of the womb; that is, children, but a defiling of the flesh and moral decay. Defile—“To make filthy or dirty; pollute.”
Heed the warning against sodomy, the defiling of the flesh, in Jude 1:7,8: “Even as Sodom and Gomorrah, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire. Likewise also these filthy dreamers defile the flesh…” (Jude 1:7,8)
Important note: Semen, the male ejaculate, may be likened to blood in the sense that “there is life in the blood.” Semen is present in the so-called lubricant that a male excretes before and during copulation; hence, the lubricant may be deemed life-giving blood. Apply this, if you will, to oral sex: when a woman commits this vile crime against nature, even though she may not ingest the resultant ejaculate, she nevertheless ingests the outflow of lubricant, which also contains the blood of life, meaning that she literally ingests blood. This is the forbidden sin of cannibalism and the spiritual authority for Satan to give the offender the dreaded disease of AIDS. Note: AIDS may also be contracted if blood is ingested through either a used hypodermic needle, blood transfusion, or organ transplant.
In summary, the interrelated sins: sodomy (defiling the flesh) and cannibalism, are sins unto death. Beloved, if you are engaged in these crimes, you must stop immediately. “For if we sin willfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins, But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.” (Heb 10:26,27)
Of course, the page also offers this gem:
Note: For the spiritually discerning, one of the major causes of homosexuality is masturbation.
That clinches it… I guess I’m a raging fag now…
Yer pal,
Satan
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in translation, I have no clue.