Question: What Christian publication first published in 1971 has Brandan Robertson written for?

Related documents: [0]  [DOC] Sojourners magazine is a progressive monthly publication of the American Christian social justice organization Sojourners, which arose out of the Sojourners Community. It was first published in 1971 under the original title of "The Post-American". The magazine publishes editorials and articles on Christianity and politics, the church and social issues, social justice, and Christian living. Articles frequently feature coverage of fair trade, interfaith dialogue, peacemaking, and work to alleviate poverty. The offices of the magazine are in Washington, D.C. [END] 
[1]  [DOC] Brandan Robertson (born June 24, 1992) is a bisexual Christian writer, activist, and speaker, best known for his writing and commentary on millennials, spiritual evolution, contemplative spirituality, and his work as an LGBTQ activist among evangelicals. Robertson currently serves at the Lead Pastor of Missiongathering Christian Church in San Diego, California. Robertson received his Bachelor of Arts in Pastoral Ministry and Theology from Moody Bible Institute in Chicago, Illinois and his Masters of Theological Studies from Iliff School of Theology in Denver, Colorado. Robertson writes regularly for Patheos, The Huffington Post Blog, and Sojourners Magazine. He is the author of "Nomad: A Spirituality For Traveling Light" (Darton,Longman,Todd, 2016) and "True Inclusion: Becoming Communities That Embrace Everyone" (Chalice Press, 2018), and the editor of "Our Witness: The Unheard Stories of LGBT+ Christians" (Cascade Books, 2017). He is the executive director of a small non-profit, "Nomad Partnerships", which seeks to "foster spiritual and social evolution" through advocacy and education. [END]  
Answer: Sojourners
Sojourners