Last week, President Barack Obama affirmed his personal support for gay marriage, pushing the issue into the political spotlight once again. Of course, it’s much more than politics. It’s a spiritual issue, too. When faced with the question of gay marriage, Christians will often rattle off buzz verses that explicitly condemn homosexual practice, such as Leviticus 18:22, Romans 1:26-27, or the story of Sodom and Gomorrah. Others take us to the garden, where God established...