It does not of course follow that in the case of every prayer an elaborate ritual was observed. Many of the prayers to the gods in their present form do not embody omens, as indeed many contain no reference to offerings or symbolical acts. While no conclusion can be drawn from this circumstance, since the omission may be due to the point of view from which in a given case a collection of prayers was made by the priest, still we may well believe that for the exorcising of evil spirits the utterance of sacred formulas was often considered quite sufficient. In the earlier stages of the Babylonian religion the priest's function may have ended when he had exorcised the demons by means of magic words. The demons were forced to yield. If they nevertheless held out, so much the worse for them or--for the priest, who, it was concluded, must have lost his power over the spirits through some error committed by him. The resort to omens has wider aspects, as will presently be shown, than the connection with prayers and offerings, and a most reasonable view is that omens were first introduced into prayers on occasions when a worshipper wished to ascertain the will of a deity for a certain purpose, and to regulate his own conduct accordingly. In petitioning the deity a sacrifice was naturally offered. Through the sacrifice, which was rendered acceptable to the deity by the mediation of the priest, the desired answer to a question was obtained. From being resorted to in such instances, omens would naturally come to form part of the ritual for almost any occasion when a deity was appealed to, both in connection with incantations and symbolical acts when the omens would form a supplement to the magic element in the ritual, as well as in cases where no specific incantations are introduced. In both cases the omens would constitute the means resorted to for ascertaining whether the petitioner might look for a favorable reply to a request proffered or, in a more general way, find out anything that it may be important for him to know. The occasions for consulting the deity would be of a public or private character. How far it became customary for the general public to secure the mediation of a priest for securing aid from the gods in matters appertaining to personal welfare we have no means of definitely determining. We find, for example, a son consulting an oracle on behalf of his father in order to ascertain what day would be favorable for undertaking some building operation,[492] and he receives the answer that the fourth of the month will be propitious; and so there are other occasions on which private individuals consult the priests, but in general it was only on occasions of real distress that an individual would come to the sanctuary,--to seek relief from bodily ills, to ward off blows of adversity, to pacify a deity who has manifested his or her displeasure. The expense involved--for the worshipper was not to appear