Ideas of likeness are central to accounts of participation. In this chapter, we consider not only what it means for creatures to derive their existence (or – better – being) from God but also their nature, essence, or characterfulness. This is the territory of exemplarity and exemplary causation. A Platonic tradition of thinking about exemplarity is considered, not least in terms of the way it has been taken up and transformed by writers working in a Biblical tradition. Different ways to think about exemplarity are considered, particularly the theological distinction between likeness, image, and vestige, and between a likeness to a divine idea and a likeness to a divine perfection. Attention is given to the idea of the imago dei.

In the first of five opening chapters on participation and divine causation, we look at 'efficient' or 'agent' causation: what it means, from a participatory perspective, for God to be the cause and agent of creation. The chapter situates the idea of participation within the foundational doctrine, common to the Abrahamic faiths, of creation as being ex nihilo. Nothing is coaeval with God; nor did God rely upon anything else for creation: on eternally existent matter, for instance. Creation is not some past event, now over, but should rather be seen as a relation of dependence upon the creator. This is explored in terms of gift and of the relation of the doctrine of creation to the doctrine of God. This leads on to a discussion of theological apologetics.