Reservations concerning the ontologies of theism, transhumanism and posthumanism compel an explicatory discourse on their influences on Nursing and rehabilitation healthcare. Key journals in Nursing and health sciences have recently devoted themed issues on intelligent machine technologies such as humanoid healthcare robots and other highly technological healthcare devices and practice initiatives. While the technological advance witnessed has been a cause for celebration, questions still remain that are focused on the epistemological concerns. The purpose of this article is to discuss theistic (...) ontologies such as the Judeo‐Christian, Shinto‐Buddhist and Islamic religious belief systems on transhumanism and posthumanism in the assimilation of symbiotic technological beings in Nursing and rehabilitation healthcare practice. In view of the approaching technological singularity dominating arguments regarding the future of human beings, a treatise on Nursing and rehabilitation health care is positioned well within the realms of human care. Theism, transhumanism and posthumanism are directing discussions regarding human beings and healthcare processes. It is imperative that the beneficial effects of these discussions be acknowledged within the highly technological world of Nursing and rehabilitative healthcare. (shrink)