John M. Garvan, The Manóbos of Mindanáo
“ Invocation.--The invocation is a formal address to the deities, and on special occasions even to the demons, when it is desired to make a truce with them. It is the prerogative of the priest in nearly all ceremonies. As a rule it begins in a long, roundabout discourse and extends itself throughout the whole performance, continuing at intervals for a whole night or longer in important ceremonies. It may be participated in by one priest after another, each one addressing himself to his particular set of divinities and beseeching them by every form of entreaty to be propitious. ”
