The Gay Christian vs. John Piper

A new book attempting to make a biblical case for homosexual marriage asserts that John Piper and Tim Keller hold "core principles" that "should cause them to reconsider" their opposition to same-sex marriage. But both Piper and Keller have argued in recent writings that homosexual acts and desires are sins.

Matthew Vines' "God and the Gay Christian," released April 22 by Convergent Books, also cites Augustine, John Chrysostom, John Calvin and C.S. Lewis in the course of arguing that Scripture allows monogamous same-sex marriage. Vines admits that Christians throughout history condemned homosexuality, but he writes that most did not understand the modern concept of homosexual "orientation" and that aspects of their thought lend support to the argument for gay marriage.