Evangelical megapastor, author, and television writer Rob Bell publicly expressed support for marriage equality Sunday, mincing few words as he offered a scathing critique of American evangelicalism.

Speaking before an assembled crowd at Grace Cathedral, an Episcopal church in San Francisco, Bell, an avowed evangelical who has been called the “heir to Billy Graham,” responded to a question about his personal views on same-sex marriage with a firm endorsement of the right to marry.

BELL: I am for marriage. I am for fidelity. I am for love, whether it’s a man and woman, a woman and a woman, a man and a man. I think the ship has sailed and I think the church needs — I think this is the world we are living in and we need to affirm people wherever they are.

Bell, who was promoting his new book What We Talk About When We Talk About God, also expressed frustration with conservative strains of American evangelicalism, saying their theologies “don’t actually shape people into more loving, compassionate people”:

BELL: I think we are witnessing the death of a particular subculture that doesn’t work. I think there is a very narrow, politically intertwined, culturally ghettoized, Evangelical subculture that was told ‘we’re gonna change the thing’ and they haven’t. And they actually have turned away lots of people… We have supported policies and ways of viewing the world that are actually destructive. And we’ve done it in the name of God and we need to repent.”

Listen to the full interview here (his comments on marriage equality come at 42:30):

This is the first time Bell has offered public endorsement for the right to marry, a significant shift that will likely make waves given his prominence among evangelicals. Listed as one of Time Magazine’s top 100 most influential people in the world in 2011, the church Bell founded, Mars Hill Bible Church in Grandville, Michigan, boasts a Sunday attendance of more than 10,000 members.  But his influence extends far beyond the sanctuary walls: his books Love Wins and Velvet Elvis are New York Times bestsellers, and his NOOMA video series is a staple of church youth groups and young adult ministries all over the country. What’s more, Bell left his church in September 2011 to work on a new television series with “Lost” producer Carlton Cuse, setting himself up to have a nationally televised platform through which to express his popular — and increasingly progressive — theological views.

Our guest blogger is Jack Jenkins, Writer and Researcher for the Center for American Progress Faith and Progressive Policy Initiative.

A group of religious organizations, including the Mormon Church, Southern Baptist Convention, and National Association of Evangelicals, have submitted amicus briefs to the Supreme Court arguing it should uphold both the Defense of Marriage Act and California’s Proposition 8. The briefs, written by Mormon Church lawyer Von Keetch, make similar points to other anti-gay briefs about the inferiority of same-sex couples, but notably tries to brush aside the research that suggests otherwise (HT: Kathleen Perrin):

DOMA BRIEF: Whether the Nation retains the traditional definition of marriage or redefines marriage to include same-sex couples is a social issue with potentially wide-ranging consequences. By their nature, such policy questions cannot be definitively answered by science, professional opinion, or legal reasoning alone. Although we are certainly persuaded by scholarly opinion supporting traditional marriage, the truth is that social science scholars, for instance, disagree about the effects of gay parenting on children. Whatever the ultimate conclusions may be, “nothing in the Constitution requires [government] to accept as truth the most advanced and sophisticated [scientific] opinion.”

PROP 8 BRIEF: Admittedly, there is an active debate within the social sciences over whether some of these common sense judgments are empirically sound. But “nothing in the Constitution requires California to accept as truth the most advanced and sophisticated [scientific] opinion.” Lawmakers – including the people of California – are entitled to “act on various unprovable assumptions,” including those that in “the sum of [their] experience” lead them to conclude that traditional marriage and the family structure it supports deserve distinctive legal protection.

In the footnotes, Keetch cites the Mark Regnerus “family structures” study, as well as the simultaneously published meta-analysis by Loren Marks, as evidence of research with a negative conclusion on same-sex parenting. But an internal audit by the publishing journal found Regnerus’ conclusions about same-sex parenting to be “bullshit,” and Marks’ analysis to be “lowbrow” and unworthy of publication. Despite how conservative groups have championed Regnerus’ methods and results, Regnerus himself has admitted that his research was not about gay parenting.

Contrary to what these religious groups claim, there is no debate among social scientists about the capacity of same-sex couples to raise children. In fact, it has already been nine years since the American Psychological Association resolved to support same-sex adoption, and subsequent research continues to confirm that children raised in such households fare just as well as children raised by opposite-sex couples. Researchers have objected that other briefs filed in these cases have cited their studies to draw conclusions about same-sex parenting that are not evident from the research.

The language in these particular briefs suggest that the religious groups don’t care what the research says anyway, hence their haste to dismiss it. Given their concern for protecting children, what is more telling is their refusal to acknowledge the two million children already being raised by same-sex couples. Even if the Court chooses to ignore the science that same-sex couples could make equally good parents, it cannot ignore that they already are doing so.

The Presidential Inauguration Committee announced Tuesday that the President Obama has selected Pastor Louie Giglio of the Georgia-based Passion City Church to deliver the benediction for his second inauguration. In a mid-1990s sermon identified as Giglio’s, available online on a Christian training website, he preached rabidly anti-LGBT views. The 54-minute sermon, entitled “In Search of a Standard – Christian Response to Homosexuality,” advocates for dangerous “ex-gay” therapy for gay and lesbian people, references a biblical passage often interpreted to require gay people be executed, and impels Christians to “firmly respond to the aggressive agenda” and prevent the “homosexual lifestyle” from becoming accepted in society. Below are some of the most disturbing views in the sermon.

Christians must fight against LGBT-equality:

(2:40) We must not just sit quietly by and stick our heads in the sand and let whatever happens happen in our country. We’ve got to respond to the world that we live in. That is the mandate that comes to us as people of God. And this issue is coming more and more to the forefront every day.

(31:45) We must lovingly but firmly respond to the aggressive agenda of not all, but of many in the homosexual community. … Underneath this issue is a very powerful and aggressive moment. That movement is not a benevolent movement, it is a movement to seize by any means necessary the feeling and the mood of the day, to the point where the homosexual lifestyle becomes accepted as a norm in our society and is given full standing as any other lifestyle, as it relates to family.

Homosexuality is a sin:

(9:20) [God] says very clearly in [Leviticus], verse 22, after he talks about a lot of different kinds of relationships, he says in verse 22: “You shall not lie with a male as one lies with a female. It is an abomination.” Now if you would look forward into the New Testament context, to the passage that most of us know most commonly with this issue, into chapter one of the book of Romans, let’s read a few verses together beginning in verse 18. If you’re taking notes tonight, you might make this the note of Leviticus 20:13 and the book of Jude, we won’t look at those passages but there is some support and encouragement there to this topic.

(17:37) Men, women, I can’t say anything other to you tonight than this, that if you look at the counsel of the word of God, Old Testament, New Testament, you come quickly to the conclusion that homosexuality is not an alternate lifestyle… homosexuality is not just a sexual preference homosexuality is not gay, but homosexuality is sin. It is sin in the eyes of God, and it is sin according to the word of God. You come to only one conclusion: homosexuality is less than God’s best for his creation. It is less than God’s best for us and everything in our lives that is less than God’s best for us and his plan for us and his design for us, is sin. That’s God’s voice. If you want to hear God’s voice, that is his voice to this issue of homosexuality. It is not ambiguous and unclear. It is very clear.

People aren’t born gay — but even if they are, it’s still a choice like giving into alcoholism, addiction, and overeating:

(28:20) I would refer you maybe just to the article “Born gay?” by Joe Dallas, who is the president of a ministry that helps with homosexuals in “recovery.” It was found in Christianity Today in June of 1992. It really unfolds for us that the evidence that they say is there, that the media wants to tell us is there really isn’t there at all. But I want to tell you this tonight. Even if it was there… How do you respond to that? How do you respond to the news reports that we’re hearing in the last few months that there is a genetic tendency to be an over-eater and it’s been supposedly proved by the scientists? That there is a genetic tendency to addictive behavior. Alcoholics by and large have a genetic tendency to addictive behavior. I predict in our lifetimes and not a very long period of time from now, scientists and geneticists will have found a way to prove a gene theory for every malfunction in sinful society. And do you know why? We talked about it the very first week—because we do not want responsibility for our choices.

Gay people are going to Hell:

(47:40) First Corinthians, Chapter 6. In verses nine and 10, it talks about the things that prevent people from entering the Kingdom of God. It talks about all kinds of immoral behavior. And right in the midst of that passage, right in the middle of that verse it says “and those who are homosexual.” It’s clear.

Gay people can become straight through Christianity:

(40:25) As the church of Jesus Christ, we cannot sit on the sidelines, we cannot sit back inside our churches, but we must reach out and we must aggressively move toward the homosexual community because we have a message and we’ve got something to say… our message is we know Jesus Christ and Jesus Christ is powerful enough to do anything and to do everything. And the only way out of a homosexual lifestyle, the only way out of a relationship that has been engrained over years of time, is through the healing power of Jesus.

(43:16) We’ve got to say the homosexuals, the same thing that I say to you and that you would say to me… it’s not easy to change, but it is possible to change.

Listen to the sermon:

Four years ago anti-gay Pastor Rick Warren gave the invocation at President Obama’s first inauguration.

A spokesman for Giglio was not immediately available to respond to questions about whether this sermon represents Giglio’s current thinking.