DOI: 10.1111/erev.12392 © (2019) World Council of Churches. Published by John Wiley & Sons Ltd. 661 Christian–Muslim Cooperation Demonstrating God’s Image/Caliph in Ecotheology Sayed Hassan Akhlaq An imam, professor, and human rights activist, Sayed Hassan Akhlaq is religious and cultural advisor for the Global Watch Group, Washington, D.C. Abstract This paper seeks to elaborate how a constructive dialogue between Christianity and Islam provides the faithful with a chance to promote ecotheology and earth-honouring ideas. It focuses on Orthodox Christianity, particularly St. Gregory and the Buffalo Statement (2015), alongside many verses of the Quran to develop the subject. It reshapes both Christian and Islamic modules of the relationship between God and humans as the Creator and the Creature. Thus, the notions of the “image of God” in Christianity and of “caliph of God” in Islam are elaborated to suggest a new theology which honours the earth and worldly life as well as enriches people’s lives with faith and divinity. The new theology uses faith concepts to serve humanity with regards to new demands and challenges rather than keeping humanity at its service. Keywords Bible, Quran, Buffalo Statement, St. Gregory, image of God, caliph of God, ecotheolog y To start with a confession, I was born in Bamyan, a city in Afghanistan surrounded by Sunni people, but I grew up in Mashhad, a city in Iran that was mostly Shia. Still, we were all Muslims. There were very few opportunities to meet non-Muslim people. Out of curiosity, I have tried to learn about other faiths as well as philosophies, mainly through reading. When I moved to the USA, I got a chance to meet people from dif- ferent faiths or unbelievers. I have visited many places of worship, and engaged schol- ars from various backgrounds and religious beliefs. I lived closely with other faiths, including four years in the Catholic Josephite seminary. I learned that living daily life