Yesterday I attended an engaging, funny, and dangerously wrongheaded three-hour presentation about the Bible and homosexuality by Dr. Robert Gagnon, a professor at Pittsburgh Theological Seminary. Dr. Gagnon argued, convincingly, that Scripture prohibits homosexual activity. What he didn't do was explain why that supposedly settles the matter.
In his presentation, Dr. Gagnon brilliantly spun a few phrases from Genesis, and a number of subsequent scriptural passages, into a detailed account of the alleged story of God's dividing the first "earthling" into male and female halves. He argued that "humans are an example of sacral architecture," and that homosexual activity does violence to the Creator's design. His presentation was clearly based on an article, "Why 'Gay Marriage' is Wrong," in which he summarized that part of his thesis:
An originally binary, or sexually undifferentiated, adam (“earthling”) is split down the “side” (a better translation of Hebrew tsela than “rib”) to form two sexually differentiated persons. Marriage is pictured as the reunion of the two constituent parts or “other halves,” man and woman.
Unfortunately, Dr. Gagnon's argument is built on sand, namely the unstated assumption that the author(s) of the Book of Genesis got the history right (to say nothing of the biology). From everything I've ever learned in school and elsewhere, we have no reason to regard the scriptural tales of Adam and Eve as anything more than speculation. And yet, on the basis of this ahistorical, pre-scientific speculation of 3,000 years ago, we have the effrontery to direct present-day gay and lesbian adults to remain alone and celibate throughout their lives.