Modern man, thanks to the development of science, has approached the possibility of changing his biological properties, which determines the ontology of ethical reflection on the undeniable rapidity of the development of neurosciences, nanoand neurotechnologies and their future ability to change the man himself in the context of the phenomenon of “man is a project who designs himself ”, which is the emergence of a philosophical question about the purpose, purpose of the existence of the world and man in this world. What is a human being? A complex body? But we feel ourselves in the body rather than in the body. Today, the problem of physicality is becoming extremely topical due to the problems of neuroethics, research of the human brain and attempts to create artificial intelligence. In the context of religious discourse, corporality acquires a sacral dimension. This leads to the fact that attempts to invade human body at the level of “replacement” of what elements or attempts to technologically expand consciousness as an illegal invasion of the personal and sacred sphere. Keywords: neuroethics, religious discourse, Abrahamic religions, corporality, isihasm.