I answer that, Irrational creatures are directed to their own actions by some other agent. Now the action of what is directed and moved is also the action of the director and mover: thus the movement of the arrow is an operation of the archer. Wherefore the operation of the irrational creature is ascribed not only to it, but also and chiefly to God, Who disposes the movements of all things. It is also ascribed to the devil, who, by God's permission, makes use of irrational creatures in order to inflict harm on man.
Accordingly the adjuration of an irrational creature may be of two kinds. First, so that the adjuration is referred to the irrational creature in itself: and in this way it would be vain to adjure an irrational creature. Secondly, so that it be referred to the director and mover of the irrational creature, and in this sense a creature of this kind may be adjured in two ways. First, by way of appeal made to God, and this relates to those who work miracles by calling on God: secondly, by way of compulsion, which relates to the devil, who uses the irrational creature for our harm. This is the kind of adjuration used in the exorcisms of the Church, whereby the power of the demons is expelled from an irrational creature. But it is not lawful to adjure the demons by beseeching them to help us.
This suffices for the Replies to the Objections. _______________________
QUESTION 91
OF TAKING THE DIVINE NAME FOR THE PURPOSE OF INVOKING IT BY MEANS OF
PRAISE
(In Two Articles)
We must now consider the taking of the Divine name for the purpose of invoking it by prayer or praise. Of prayer we have already spoken (Q. 83). Wherefore we must speak now of praise. Under this head there are two points of inquiry:
(1) Whether God should be praised with the lips?
(2) Whether God should be praised with song? _______________________
FIRST ARTICLE [II-II, Q. 91, Art. 1]
Whether God Should Be Praised with the Lips?