(1) How far they can change them by their own natural power;
(2) How they are sent by God to the ministry of men;
(3) How they guard and protect men.
Under the first head there are four points of inquiry:
(1) Whether an angel can enlighten the human intellect?
(2) Whether he can change man's will?
(3) Whether he can change man's imagination?
(4) Whether he can change man's senses? _______________________
FIRST ARTICLE [I, Q. 111, Art. 1]
Whether an Angel Can Enlighten Man?