Sexual Nature of Sin
Throughout history, Sodomite society has been used as metaphors for rape, homosexuality, sexual immorality, and sexual deviance. The English word, "Sodomy", is derived from "Sodom", and means non-vaginal intercourse, as well as bestiality.
The Catholic Church pounced on this passage, as well as other New Testament passages, to support the Church's claim that acts of homosexuality are to be considered "acts of grave depravity".
Proponents of this theory point to the apparent demand by the men of Sodom for Lot's strangers to come out of the house, so they can forcibly have homosexual intercourse with them.
In other words, the Sodomite men want to rape the angels in Lot's house. However, there are scholars who claim that this passage is not referring to rape, or any acts of sexual immorality at all. The sin of Sodom, according to these people, is their inhospitable attitude towards strangers.
The crux of this division rests in the interpretation of the word, "Know".
"Bring them out unto us, that we may know them. -- Genesis 19:5
The Hebrew word for "Know" appears over 900 times in the Bible. Proponents of a non-sexual view hold that, of the 900 appearances, only 1 percent of the time is it used with sexual connotations. They argue that in this passage, the men of Sodom wanted to interrogate the men in Lot's house, not rape them.
However, one of those few sexual connotations occurs three verses later, when Lot offers up his two daughters to the Sodomite men, in exchange for the safety of the two angels.
"Behold now, I have two daughters who have not known man..."
Proponents of a sexual-nature of sin, point to the context which "Know" is used within the passage as evidence of sexual immorality.
If this passage remains vague still, there is a passage in the book of Jude which specifically names the sins of the Sodomite society.
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