With the removal of sexual orientation as a bar to ordination in the Presbyterian Church (U.S.A.), pending approval of a majority of presbyteries, and the Episcopal Church’s 2009 General Convention calling for the development of theological and liturgical resources for same-sex blessings, sexual orientation—especially with regard to marriage—is a central issue. Secularly, too, the topic is front-page news with the recent California same-gender marriage ruling and subsequent Proposition 8 vote...