Vers. 29 and 30.—But if thy right eye, &c. It is plain that there are here two parables, taken from the two most excellent and most useful of our bodily members—the right eye and the right hand. And Christ signifies that everything which entices us to sin must be cast away, however dear, precious, and necessary it may be to us. He makes mention of the eye first, because he had just before said, Whoso looketh upon a woman, &c. 1. Thus, S. Chrysostom (Hom. 17), by the right eye and hand, understands a woman beloved, such a one as he had just been speaking of, that she must be cast off, if by her look, voice, or gesture she provoke to lust. 2. S. Augustine (lib. de Serm. Dom. in Mont., lib. 1), understands any friend and minister, even one who is necessary. 3. S. Hilary, Theophylact (in loc.), Cyril, Pacian (Epist. 3), understand parents and relations, that intercourse with them must be cut off, if it leads us into sin. 4. S. Jerome understands affections and vices of the mind. 5. Auctor Imperfecti considers that by the right eye and hand the mind and will are meant, which must be called away from carnal pleasures.
But more simply and plainly you may take the right eye and hand to be actually meant, but in such a sense as to subserve the meaning of the parable, and to be parabolically explained. For there is here a continuous parable, in which Christ has regard to concupiscence of sight. Christ is dealing with such an implied objection as this which follows: “You may urge that if the eye and the sight are adulterous when they look upon a woman to lust after her, what then shall I do with the eyes which God has given me to see with?”
Again, it is a metaphor taken from surgery. As those who are sick and injured take care that a surgeon should amputate or remove the most noble and useful of our members, if their remaining imperil the safety of the whole body; so, also, I admonish you, O my faithful people, that ye endure any loss whatsoever, rather than commit a sin, especially a deadly sin; that, indeed, whatever is a stumbling-block to you and draws you to sin, although it be as dear and necessary to you as your right eye, you should altogether pluck it out and cast it from you, at whatever cost to you of pain and inconvenience; for example, that ye should put away the sight of an eye, even if modest in other respects, that is, the friendship and society of female relations, a wife, a son, a parent, if they bring upon you peril of sin, i.e., if by other means you are not able to escape sin, for it is better to enter into heaven having one eye, than having two eyes to be cast into hell. But because it is always possible to escape from sin in some other way than by cutting off a member, it is not lawful to cut it off and so mutilate oneself. Thus it was that Origen, who made himself a eunuch for the sake of chastity, was condemned by the Church. Finally, the concupiscences which have to be cut off and mortified by every one so tenaciously cleave to the eyes and the body, yea, to the soul itself, that they cannot be rooted out without great force and sense of pain, so that they who cut them off suffer as much as if they plucked out an eye or a tooth. They who have gone through it know what it is. Whence it is called mortification, because it produces the feeling and pain of death.
Thus according to the letter, SS. Aquilinus and Andomarus, as is related in their Lives in Surius, who had been blind, and recovered their sight by a miracle, asked of God that they might be again deprived of sight, that they might be free from the distractions and temptations to which sight gives rise. Furthermore it was by a special leading of God that the virgin mentioned in the Spiritual Meadow of Sophronius, plucked out her eyes and sent them to her lover, who persecuted her with his attentions, because he was ravished with the beauty of her eyes. When he received this gift the lover was smitten with compunction, and exchanged his secular for a monastic life.
S. Antonius asked Didymus, a blind man, whom S. Jerome calls his seer, that is, his teacher, if he grieved over his blindness. He was silent or a little while, and nodded; then he said, “A prudent man ought not to grieve because he is without eyes, which are possessed by flies and bees; but he ought to rejoice, because he has greater opportunities for opening the eyes of his mind, by which he may see God and divine things.”