Whether a spell can be an impediment to marriage?

Objections

Objection 1 : It would seem that a spell cannot be an impediment to marriage. For the spells in question are caused by the operation of demons. But the demons have no more power to prevent the marriage act than other bodily actions; and these they cannot prevent, for thus they would upset the whole world if they hindered eating and walking and the like. Therefore they cannot hinder marriage by spells.
Objection 2 : Further, God's work is stronger than the devil's. But a spell is the work of the devil. Therefore it cannot hinder marriage which is the work of God.
Objection 3 : Further, no impediment, unless it be perpetual, voids the marriage contract. But a spell cannot be a perpetual impediment, for since the devil has no power over others than sinners, the spell will be removed if the sin be cast out, or by another spell, or by the exorcisms of the Church which are employed for the repression of the demon's power. Therefore a spell cannot be an impediment to marriage.
Objection 4 : Further, carnal copulation cannot be hindered, unless there be an impediment to the generative power which is its principle. But the generative power of one man is equally related to all women. Therefore a spell cannot be an impediment in respect of one woman without being so also in respect of all.