Even as our culture has swiftly moved toward accepting same-sex marriage, the term "homosexual" has already disappeared among those who have taken the time to listen and learn from gay and lesbian neighbors and friends. For good reasons, the preferred language among those neighbors has become "LGBT"—"Lesbian, Gay, Bisexual and Transgendered" (or "Transsexual").

We should welcome this shift, because it actually helps clarify the multiple sexualities whose representatives have banded together to seek legal recognition and relief from stigma and shame. Indeed, the initialism LGBT is increasingly augmented by references to Queer (or Questioning) and Asexual persons—thus including those who find their sexuality ill-defined by the existing heterosexual or homosexual categories. It also often seeks to include Intersex individuals, the small but real number of persons whose bodies are born gender-ambiguous.

The proliferation of initials signals the formation of a powerful coalition. But it also reminds us of the important differences between the members of that coalition. Christians cannot simply accept or reject "same-sex marriage" and think we have settled our sexual ethics. The LGBTQIA coalition has other challenges for the church.

Begin just with those who identify as lesbian and as gay. Patterns of sexual expression, relationship formation, and identity discovery are markedly different between gay men and lesbian women. Statistically speaking, gay sexual orientation seems most often to emerge early, definitively, and persistently; lesbian orientation is more fluid and ambiguous. (This has implications, too, for claims of "recovery" from homosexuality, ...

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