Ecotheology is a new field of the theological reflexion. Environmental ethics, whose models and approaches do not always have an integrated vision of reality, belongs to this field. Human beings and Environment are not separated and mutually opposed realities. On the contrary, one cannot be studied apart from the other, for they are distinct parts of the same biotic community that is organized in a relational and integrated dynamical structure. In order to overcome dualisms and reductionist viewpoints, an Environmental Ethic from a Christian perspective must integrate ecological commitment and social justice, that is, preservation of the natural world and respect for the human environment. This is the central approach of our thesis. We stress the urgency of an ethical awareness that, following a dynamics of integration and inclusion, presents a mutually interacting perspective of the biblical and Christian faith on Creation which, at the same time, is in harmony with the new ecological paradigm. Our research studies the Camorim Ecological Volunteers Project which sought a model of sustainable development for the local community, based on its cultural identity. In the light of anthropological, ethical, and theological assumptions, we seek in this Project to identify the elements of an Environmental Ethic based on relational and integrative perspectives of the Christian faith.