Jan G. Linn is author of Big Christianity: What’s Right with the Religious Left (Westminster John Knox, 2006) and a co-pastor of Spirit of Joy Christian Church (Disciples of Christ) in Minneapolis. A former college and seminary professor, Linn calls himself a “recovering fundamentalist” who wants to reclaim the idea of Christianity as generous, or liberal, and tolerant.

Sister Joan Chittister, a Benedictine nun, lecturer and writer, has been especially active on peace issues. She was a guest on an April 16 Meet the Press panel about faith and politics.

Robert Jensen is a an associate professor of journalism at the University of Texas-Austin, where he teaches media law, ethics and politics. He is the author of the 2009 book, All My Bones Shake: Seeking a Progressive Path to the Prophetic Voice, which recounts his return to church and his commitment to progressive social activism.

Project ORE serves emergency kosher meals and provides counseling, case management and other supportive services to isolated, poor, homeless, mentally ill, elderly Jews (including Holocaust survivors) in New York City. It is a program of the Educational Alliance.

Operation Safety Net is a health care outreach program operated through the Pittsburgh Mercy Hospital System and Catholic Health East. It provides medical care to homeless people living on the streets of Pittsburgh and recognized as one of nation’s first, targeted, full-time street medicine programs. Dr. Jim Withers started the program in 1992.

Faithful America is an interfaith advocacy project of the National Council of Churches that is based in Washington, D.C. Contact through the website.

Christopher Jencks is the Malcolm Wiener Professor of Social Policy in the Kennedy School of Government at Harvard University. He is the author of The Homeless and has written about poverty, welfare reform and changes in American family structure.

The New Hampshire Coalition to End Homelessness, a nonprofit organization with headquarters in Manchester, New Hampshire, was founded in 1990. It organizes leaders in the state to research solutions on ending homelessness, educate providers on best practices and empower people to advocate on behalf of the homeless.

Tim Carpenter is national director of Progressive Democrats of America, a co-sponsor of the Conference on Spiritual Activism. It provides links to chapters across the country. It’s based in Phoenix, Ariz.