Proverbs 4:25

The divine law, then, not only forbids the worshipping of idols, but also of the heavenly bodies, the sun, the moon, or the other stars; yea, not heaven, nor earth, nor the sea, nor fountains, nor rivers, must be worshipped, but we must serve in holiness of heart and sincerity of purpose only the living and true God, who also is Maker of the universe. Wherefore saith the holy law: “Thou shalt not commit adultery; thou shalt not steal; thou shalt not bear false witness; thou shalt not desire thy neighbour’s wife.” So also the prophets. …

And concerning chastity, the holy word teaches us not only not to sin in act, but not even in thought, not even in the heart to think of any evil, nor look on another man’s wife with our eyes to lust after her. Solomon, accordingly, who was a king and a prophet, said: “Let thine eyes look right on, and let thine eyelids look straight before thee: make straight paths for your feet.” And the voice of the Gospel teaches still more urgently concerning chastity, saying: “Whosoever looketh on a woman who is not his own wife, to lust after her, hath committed adultery with her already in his heart.” “And he that marrieth,” says [the Gospel], “her that is divorced from her husband, committeth adultery; and whosoever putteth away his wife, saving for the cause of fornication, causeth her to commit adultery.” Because Solomon says: “Can a man take fire in his bosom, and his clothes not be burned? O …

But, above all, it seems right that we turn away from the sight of women. For it is sin not only to touch, but to look; and he who is rightly trained must especially avoid them. “Let thine eyes look straight, and thine eyelids wink right.” For while it is possible for one who looks to remain stedfast; yet care must be taken against falling. For it is possible for one who looks to slip; but it is impossible for one, who looks not, to lust. For it is not enough for the chaste to be pure; but they must give all diligence, to be beyond the range of censure, shutting out all ground of suspicion, in order to the consummation of chastity; so that we may not only be faithful, but appear worthy of trust. …

He “looks right on” who has thoughts free of passion; and he has true judgments, who is not in a state of excitement about external appearances. When he says, “Let thine eyes look right on,” he means the vision of the soul; and when he gives the exhortation, “Eat honey, my son, that it may be sweet to thy palate,” he uses “honey” figuratively, meaning divine doctrine, which restores the spiritual knowledge of the soul. But wisdom embraces the soul also; for, says he, “love her, that she may embrace thee.” And the soul, by her embrace being made one with wisdom, is filled with holiness and purity. Yea more, the fragrant ointments of Christ are laid hold of by the soul’s sense of smell.

2. But some one will say, What can sin be? Is it a living thing? Is it an angel? Is it a demon? What is this which works within us? It is not an enemy, O man, that assails thee from without, but an evil shoot growing up out of thyself. Look right on with thine eyes , and there is no lust. [Keep thine own, and] seize not the things of others, and robbery has ceased. Remember the Judgment, and neither fornication, nor adultery, nor murder, nor any transgression of the law shall prevail with thee. But whenever thou forgettest God, forthwith thou beginnest to devise wickedness and to commit iniquity.

XXXVIII. Let us cleanse every member, Brethren, let us purify every sense; let nothing in us be imperfect or of our first birth; let us leave nothing unilluminated. Let us enlighten our eyes, that we may look straight on, and not bear in ourselves any harlot idol through curious and busy sight; for even though we might not worship lust, yet our soul would be defiled. If there be beam or mote, let us purge it away, that we may be able to see those of others also. …

But on the other hand the hasty, while they forestall the time of good deeds, pervert their merit, and often fall into what is evil, while failing altogether to discern what is good. Such persons look not at all to see what things they are doing when they do them, but for the most part, when they are done, become aware that they ought not to have done them. To such, under the guise of a learner, it is well said in Solomon, My son, do nothing without counsel, and after it is done thou shalt not repent ( Ecclus. xxxii. 24 ). And again, Let thine eyelids go before thy steps ( Prov. iv. 25 ). For indeed our eyelids go before our steps, when right counsels prevent our doings. …