Was Sodom into Sodomy?
What the Bible says about sodomy, homosexuality and sin
These passages in Leviticus are part of the so-called Holiness Code. Both clearly speak of an adult male lying with a man as with a woman, and both texts call this an abomination. The revisionist argument is that this behavior is objected to because of a concern for ritual purity, not immorality, but the supposed dichotomy between ritual and moral purity doesn't hold up. The Holiness Code concerns itself with such central moral subjects as adultery.
Our next stop is the Gospels. Jesus never condemns homosexual behavior, but his words about marriage and singleness are very pertinent. In Matthew 19:1-12, Jesus offers two options in regard to sexual behavior--fidelity in marriage or celibacy in singleness. He suggests that divorce was not God's original intent for human beings, and that he was now reinforcing the original creational intent for men and women to be together in holy wedlock. He then suggests that anyone who cannot handle fidelity in marriage should either become (or remain) a eunuch, or stay celibate for the sake of the kingdom of God. The implication of absolutely no sexual sharing outside of marriage, whether of a heterosexual or homosexual sort, is very clear. Jesus is indeed asking for celibacy in singleness, whatever one's sexual predilections might be.
We turn now to Romans 1, and here indeed we have the most complete and clear discussion of the matter. Verse 27b could hardly be clearer: "Men commited shameless acts with men and received in their own persons the due penalty for their sin."
Paul used homosexual and lesbian sin as illustrations of the more general problem of the effects of the fall. For Paul, not unlike other early Jewish writers, homosexual behavior is perhaps the clearest example of how flouting sexual distinctions is ultimately a rejection of the Creator, who made such distinctions. In other words, it is not just immorality, it is idolatry.
Much of what Paul says could apply to any sort of sinner, for all sin is ultimately rebellion against God. But verses 26-27 illustrate how this rebellion plays itself out by taking the example of lesbian and homosexual sexual activity. At verse 26, Paul introduces the concept of nature into the discussion. The verse says literally "they have exchanged the natural use for that which is contrary to nature."
Here Paul is using language frequently used in antiquity which knew no such terms as homosexual or lesbian, to refer to homosexual (unnatural) and heterosexual (natural) sexual behavior. One can not retort that Paul, no biologist, failed to realize that to some persons it seems "natural" to be attracted to those of the same gender. Paul is well aware of how sin becomes ingrained in human nature, to such an extent that it comes to seem perfectly natural. No, Paul is contrasting the creation order as originally given, versus various manifestations of human fallenness.