The original versions of the following were in email form to a friend of mine. I've edited them to make them available to more people. I'm telling you so you understand why they are broken into pieces.
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To understand what lies at the core of the argument against a hetero-centric biblical interpretation, you must understand that I believe that an important word in the Bible is "whosoever" because God's promises to us, through Jesus Christ, are for all of us. We all have powerful needs for healthy and fulfilling personal relationships, of all kinds. Using rationale that I will provide later, I'll explain why homosexuals are not in need of healing; there is nothing "unnatural" about it--in fact it is in my "nature." Also, the reason I am comfortable challenging the more widely held interpretation of these scriptures is because Biblical interpretation has changed drastically throughout the years (even though the Bible really hasn't). A logical, historical interpretation of scripture commonly used to condemn homosexual behavior shows that it DOES NOT condemn loving, responsible homosexual relationships. It actually only condemns that behavior in the cases of prostitution and idolatry.
I'll state that I believe the Bible is a key source of authority for the Christian faith, and when it is unclear about some things the best we can do is act on the things it is clear about.

"As I live, says the Lord God, your sister Sodom and her daughters have not done as you and your daughters have done. This was the guilt of your sister Sodom: she and her daughters had pride, excess of food, and prosperous ease, but did not aid the poor and needy. They were haughty, and did abominable things before me; therefore I removed them when I saw it."
One might say that the "abominable things" refers to the alleged homosexual attempt, but if it were so important, if it were the point, why isn't it clearer? It is not definite, and it doesn't reflect my attitudes about wanting a male partner.
Moving on to Leviticus 18, an entire chapter on sexual relations. Reading this out of its context can be dangerous. Leviticus was written as a manual for Israel's priests. It was written to people surrounded by Canaanites who worshiped multiple gods...fertility cults. Male and female cult prostitution prevailed in this society (Deut 23:17). The word used in Deut. is "qadesh," a male cult prostitute. Sometimes this can be mistranslated as a sodomite--using a specific term for a broader concept. Lev. calls men lying with men as with women an adomination; it is something God finds detestable. The actual word used here is "toevah," which is associated only with idolatry in Ezekiel. It is used here making the connection between same-sex behavior and idolatry...the idolatry of the male cult prostitutes in Canaan, acknowledged in Deut. While one can assume that this extends to ALL same-sex behavior, the passage really says nothing about loving, responsible homosexual relationships. In its original context, it only refers to male prostitutes of a society of idol worshipers.
Galatians 3:22-25 says "we are no longer subject to a disciplinarian." We live by faith in Jesus Christ, and Jesus Christ says not one word about homosexuality. He says EVERYTHING about love, justice, mercy, and faith. He is clear. The gospels are full and complete about that message. Other writings of the NT are clear about those.

...The question of "what is natural" comes up in these passages. "Physin," the word for natural, does not actually mean: according to some abstract natural order, but according to one's own nature. This is shown when God makes an uncharacteristic action to accept the Gentiles in Romans 11:24. This act is descried as "para physin," or unnatural (again, against one's nature, not an abstract natural order). It was an action that God had not taken before, but that doesn't mean it was against the natural order--it was of God! So when Paul says that men committed shameless acts with each other, he is not saying that same-sex behavior is against nature, it was actually against the nature of these men. These men he refers to were not homosexuals, but were seeking new sexual experiences just for the sake of sex in the context of idol worship and prostitution. They were seeking a physical high, not a deeply intimate and loving, monogamous relationship. God wants for us to have these relationships, they were just having casual sex. Such reckless behavior is contrary to God's wishes, but even in Romans, nothing is said about same-sex relationships.
Paul makes another reference in I Corinthians 6:9 that is commonly cited in anti-homosexual arguments. To further understand the context in which Paul writes, one should know that prostitution and pederasty (sex between men and boys) were the common male same-sex acts. These are acts that are more obviously contrary to healthy behavior. Prostitution is sex without real intimacy and pederasty hurts the boys because of their inability to experience a real relationship.
In Cor 6:9, Paul condemns the "effeminate" (KJV). In some translations, "effeminate" is exchanged with "sodomite" or "homosexual." I've read scholars (who I will need to search for more to cite, that call this a gross mistranslation. The actual word used is "malakos," which means a lack of discipline and control. The word is used elsewhere in the NT, but NEVER with reference to sexuality. He uses the word "arsenokoitai," which is made of two words that mean "males" and "beds," "beds" meaning sex. Since in this context Paul's concern is with prostitution, the reference probably means to condemn male prostitution, yet the true meaning of this is unclear. One thing to keep in mind is how Paul concludes this chapter: "Fornicators, idolaters, adulterers, male prostitutes, sodomites, thieves, the greedy, drunkards, revilers, robbers--none of these will inherit the kingdom of God. And this is what some of you used to be. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and in the Spirit of our God." When Jesus died for us, we ceased to be sinners. We still sin (intentionally and unintentionally), but we are saved by Jesus.
Some would say that The rarity with which Paul discusses any form of same-sex behavior and the ambiguity in references attributed to him make it extremely unsound to conclude any sure position in the NT on homosexuality, especially in the context of loving, responsible relationships. Since any arguments must be made from silence, it is much more reliable to turn to great principles of the Gospel taught by Jesus Christ (He's our savior) and the Apostles. Love God with all your heart, and love your neighbor as yourself. Do not judge others, lest you be judged. The fruit of the Holy Spirit is love. Against such there is no law.
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Since Leviticus' laws are dead with the new covenant in Jesus Christ, I'll let that argument go, I was just using it to show that even in those passages, the author was referring to fertility cults...etc.
It is true, in Genesis' first account of creation, God tells the unnamed men and women to be fruitful and multiply. So does this mean that the only natural relationship is one with a man and a woman? Personally I think that is a grand assumption and a jump from logic, and it misses the point of the creation stories. In Matthew 19:4-6, Jesus says that the point of marriage is about companionship, NOT procreation. Marriage is a bond for two people, for this life. Gen 2:18-25: God gives the man a woman because "it is not good that [he] be alone." I don't see a definite answer on this argument: is male just for female?
There is an argument in the biology. Women can bear children while men cannot, yet women cannot bear children without the seed of the man. So is this an attempt by God through scripture to limit relationships? Was that really the point? Why isn't there a passage saying something about quenching our basic sexual instinct (going along with the argument that it is not a choice). From the evolutionary standpoint, not everyone can be homosexual...we'd go extinct. This is true. Luckily, "gay" isn't a virus, and only a small percentage of any population feels so attracted to the same sex that sex with the opposite isn't possible. Obviously we shouldn't all be gay.
I wonder what homosexuals are to do. Should they remain celibate? Should they pursue heterosexual relationships, ignore the sexual dysfunction that will ultimately occur, deal with the inevitable depression, and put the stability of their families at risk? God says to be fruitful and multiply, but with so many orphans in the world, should our primary goal be to make more children? Will we not plunge further into societal dysfunction with more bad marriages, depressed/repressed individuals, and orphans without homes? Is THAT scenario of God? Is THAT the point?
Life is not fulfilled in raising children, and you won't find that perspective in the Bible. Life is fulfilled in Jesus Christ. The creation stories are not meant to restrict sexuality, they are to celebrate humanity: men and women. Adam and Eve, though created by God, do not exemplify some abstract universal moral order. Such assumptions about what ISN'T there are used to condemn behavior in a way that is contrary to the meaning of the word and the word made flesh. God encourages us to have companionship more than he wants to limit it.
The Bible does not encourage or even mention homosexual relationships. This doesn't make them right OR wrong. While homosexual acts happened, the concepts of homosexuality and sexual orientation (as we know them) didn't exist before the 19th century. Why and how would the Bible discuss something that didn't exist? The Bible says nothing about dinosaurs and evolution, an age of accountability, cremation, atoms, dating, rape as anything but an attack on property, the outer appearance of Christ, more than 20 years of his life, the trinity as doctrine, euthanasia...the list goes on. Just because the Bible doesn't speak of these things does not mean they are wrong and without existence. There is nothing conclusive to point us either way, unless we understand that the Bible has a purpose and is written in a way that we do not fully understand. It is both perfect and imperfect. It contains many contradictions (ex. at the cross, in Mt Mk and Lk, no disciples are near the cross...in Jn, a beloved disciple talks to him.) We can attempt to explain these differences away. We can say that the author of John had a source no one else did who told him this. But this does not explain how there can be such a difference in scripture that is supposed to all be the true word of God. The Bible just isn't a perfect, clean-cut, factual document. Unfortunately, the nature of the Bible leaves it open for people to support their prior beliefs, and do clever footwork to support their point(s). I think if we start with the clear messages, the ones repeated by Jesus himself throughout all of the gospels, we can frame these arguments better. We must take what we know to be true, and not just settle with society's norms on relationships, or anything.
God accepts sexual 'misfits;' God has a place for gay couples, straight couples who don't/can't conceive, and others who physically cannot reproduce.
- Acts 8:26-39 - Although this eunuch is racially and sexually unaccepted by society, he is baptized and welcomed into the kingdom of God.
- Isaiah 56:3,8 - Eunuchs and outcasts are welcome in the Lord's house.
- Mt 19:11-12 - "Eunuchs from birth" are welcome (according to Jesus). Reproductively speaking, what is a homosexual if not a eunuch from birth? (Unable to be in a committed relationship that would produce children).

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I want to sum up that last part now. It was a bit emotionally charged.
My main point is that I can´t rationalize drawing conclusions about sexuality from what is not there. There is a lot of evidence to deduce that homosexuality is not prohibited in the Bible and that it really isn´t addressed at all. This is largely because the concept, as we know it, didn´t exist. There wasn´t a widely known concept of loving, same-sex, intimate relationships.
I believe that what God wants for us is community, and that involves many dynamic relationships--none of which are exactly like another. I truly believe that true homosexual tendencies are of the creator, and I don´t think they are there to avoid and dismiss, or even to ´deal with.´ In the larger picture, it seems like these are differences which cause a culture to look beyond--to realize the true nature of our existence and salvation through Jesus Christ.
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A friend asked me this question: "Is the Bible a guide for living or is it a book that tells us just some of what we need to know?" I think my answer is "yes."
I too have struggled with this issue. I believe it is inspired by God, written/edited/organized/ published/interpreted by humans, and does contain everything necessary for living a life honorable to God. My struggle has always been clarifying what that last bit means to me, specifically. The differences really come out of the interpretations of the Bible as a whole. Bible means "many books," but unfortunately, we far too often look at it as if it were one. The books inside vary greatly and do not always compliment each other. I don't know that we're supposed to look at the Bible in the way that it is often viewed.
I too have struggled with this issue. I believe it is inspired by God, written/edited/organized/
And I think it really comes down to a personal feeling, and the choice we make of which feeling to follow. God speaks to us through the written and the living word, and because that living word is in each of us when we believe in Christ, God speaks to us from within. One asks what interpretation is right. Well I don´t know that there is just one answer to every question, mostly because there is so much variety in the world. Really that is a deep, philosophical, and unanswerable question. How DO we know what is right? Is one of us not living in harmony with the holy spirit because we disagree on this issue? I don´t think so. When two people come from different places, it only makes sense that they would have differing perspectives. One thing we share in common is our belief in how we interact with each other despite those differences. We do this, I believe, because of our love of Jesus Christ and our belief in his message.
We do things so as not to hurt one another. A friend gave the example of adultery: If someone decided that adultery was alright, and lived that way, how would we react? If we believe adultery is a sin, how are we to treat this situation? This is one I´ve contemplated myself. For me, the difference is that in this example, someone was probably getting hurt. The spouse of the adulterer, most likely. That is the difference between something like adultery and healthy homosexuality. Many of the laws set for us are intended to protect, not restrict--that´s my belief. If someone is getting hurt by another person, then they aren't being loved by that person, which is a great error on his/her part. It is against the nature of Jesus Christ.
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I certainly don´t intend to change anyone's mind about the issue, I just want to challenge the idea and I want to relate where I'm coming from to ensure that this discussion surfaces. To ensure that we don't become stagnant, and to keep from letting these things silently divide us. Please comment, privately or publicly (below).
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In the Bible we find many contradictions within and between books. We find deeper meaning when we look around, through, and beyond them. When I think about how we view and interpret these, it seems to come down to faith and a choice to follow what seems right in our heart. (Don Henley´s "Been tryin´to get down, do the heart of the matter..."). This is true for all of us--to some extent, we´re going to view and interpret the scripture in a way that coincides with what we feel is right. These ingrained feelings of what is right come from all of our surroundings for as long as we've been alive; they come from prayer; and they all come from God. It's what we do with those feelings when we interpret scripture and interact with people that is important. It is crucial that we stick to Jesus' commandment to love one another.
Many have a hard time accepting homosexuality in the church. I know how this feels because I went through the same thing. How can someone who is deemed "living in sin" lead a body of worshipers, lead a church? Will this ultimately cause a divide, where only people who think homosexuality is alright will be able to be led by a homosexual? Has it already?
Homosexuality doesn´t negate all of the other factors of faith and evangelism that a church leader should have. I think that even if some people are opposed to or permanently confused about homosexuality, it is still quite possible for them to worship and be involved with a church where the rector could be of that orientation. I actually think it opens some very interesting doors as far as teaching lessons of acceptance and love and how community can be (and should be) formed with people of all kinds. Community requires that we make a sacrifice so that we can accept the people as a whole into our hearts. True community happens when we forget the differences and look at the similarities.
Homosexuality doesn´t negate all of the other factors of faith and evangelism that a church leader should have. I think that even if some people are opposed to or permanently confused about homosexuality, it is still quite possible for them to worship and be involved with a church where the rector could be of that orientation. I actually think it opens some very interesting doors as far as teaching lessons of acceptance and love and how community can be (and should be) formed with people of all kinds. Community requires that we make a sacrifice so that we can accept the people as a whole into our hearts. True community happens when we forget the differences and look at the similarities.
That being said, homosexuality may be a fatal issue to some, and I can completely understand that position (as long as it doesn´t interfere with the commandment to love one another).
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I certainly don´t intend to change anyone's mind about the issue, I just want to challenge the idea and I want to relate where I'm coming from to ensure that this discussion surfaces. To ensure that we don't become stagnant, and to keep from letting these things silently divide us. Please comment, privately or publicly (below).