Against a background of increasing concern over climate change and other instances of ecological degradation, this paper aims to explore two ideas in the thought of Anglican theologian and biochemist Arthur Peacocke in relation to their ecotheological promise. First, Peacocke’s understanding of ‘emergence’ affirms the diversity of the created world and makes possible the understanding of Jesus Christ as the emergence of a new reality; these concepts resonate with the value given to biodiversity in ecological thought. Second, the idea that God expresses Godself through the material world in the process of creation, together with an emphasis on the biophysical composition of Jesus Christ, allows a high claim to be made for matter which resonates with an ecological affirmation of the value of the natural world. By asserting the prevalence of diversity and the value of matter, Peacocke’s thought provides a theological framework which coheres with an ecological ethos.