The article considers the ontological significance of the Eucharistic theology by S. Bulgakov, as it is presented in his works «Christ in the world» (1940). The author considers some prerequisites for development of this type of ontology in the framework of biblical Revelation about the creation of the world. The obstacles to building an adequate ontology of creation and incarnation in the traditional European metaphysics, since the latter is based on platono-Aristotelian model of the Cosmos is self-sufficient. This work of S. N.