Job 31:7

"The Lord," he says, "knows my innocence, if my foot has turned aside out of the way or if my heart has followed my eye." Is this a further detail? Yes, truly, it was important at that time as well as now. It is important, in fact, to overturn inordinate desires, and it is not less important, after receiving those desires, not to satisfy them. And proceeding further, he states something that is even more important, that is, that not even his eyes have ever accepted anything of that kind.

If my step hath turned out of the way. So many times does 'the step go out of the way,' as our thought quits the way of the right, by the consenting of wandering. Now we as it were set as many 'steps out of the way,' as we are parted by bad desires from the delightfulness of the heavenly life. For as we have before stated, being still borne down by the load of corruptible flesh, we are not able to live in such a manner as that not any enjoyment of sin should be able to strike us. But it is one thing for the mind to be touched against its will, and another to be killed whilst consenting. But holy men guard themselves with more watchful solicitude in proportion as they take shame for being assaulted by the misdirected motions even of passing gratification. And hence it is yet further added; And if mine eye hath followed mine heart. See again how by the keeping of inward vigour he returns to the training of the outward members, that if the heart should perchance covet aught forbidden, the eye being kept down by the tutorage of discipline may refuse to look at it. For as it often happens that temptation is derived through the eyes, so sometimes being conceived inwardly it forces the eyes to do service to it outwardly. Thus very often an object is regarded by a mind in a state of innocence, but by that mere look the mind is pierced through by the sword of concupiscence. For it was not (as we have already remarked for the sake of illustration) that David in this way looked of purpose on the wife of Uriah, because he had entertained the desire of her; but rather he lusted after her for this cause, because he beheld her without caution. But it happens by an inquest of right recompensing, that he who employs the external eye carelessly, is not unjustly blinded in the interior eye. Now oftentimes concupiscence rules in the interior, and the mind being seduced, after the manner of a despotism requires the senses of the body to drudge to its occasions, and obliges the eyes to serve its pleasures, and so to say opens the window of light to the dark of blindness. Hence holy men, when they feel themselves to be assailed by a wrong enjoyment, by the tutorage of discipline they withhold the very eyes themselves by which the likeness of the shape is introduced into the mind, lest the sight acting the pander should do the bidding of unhallowed thought. Which same if it ever…