Frazer has put forward the view that while the sacrifice of the god may have been piacular, it was also intended to preserve his divine life against the inroads of old age.
27 that the piacular sacrifice of his son and heir was the last offering which the king of Moab made to deliver his country.
Robertson Smith (Religion of the Semites, new ed., 1894, pp. 191, 290, 411), who, regarding Adonis as the swine-god, characterizes the Adonia as an annual piacular sacrifice (of swine), "in which the sacrifice has come to be overshadowed by its popular and dramatic accompaniments, to which the Greek celebration, not forming part of the state religion, was limited."
Whereas the god receives a gift in the honorific sacrifice, he demands a life in the piacular.