 The modern Catholic Catechism holds that there are several ways of understanding "epiousios", including the traditional 'daily', but most literally as 'supersubstantial' or 'superessential', based on its morphological components.Alternative theories are that—aside from the etymology of "ousia", meaning 'substance'—it may be derived from either of the verbs "einai" (εἶναι), meaning "to be", or "ienai" (ἰέναι), meaning both "to come" and "to go".According to the Catholic theologian Brant Pitre, a "for the future'" interpretation is "remarkably...now held by a majority of scholars," but that "the primary weakness of this view is its lack of support among ancient Christian interpreters, whose command of Greek was surely as good if not better than that of modern scholars."