2. In consequence of original sin, we all have an inclination to do what is forbidden. Hence St. Paul complained that he experienced in himself a law opposed to reason: “But I see another law in my members, fighting against the law of my mind, and captivating me in the law of sin." (Rom. vii. 23.) Now, when a dangerous occasion is present, it violently excites our corrupt desires, so that it is then very difficult to resist them: because God withholds efficacious helps from those who voluntarily expose themselves to the occasion of sin. "He that loveth danger shall perish in it." (Eccl. iii. 27.)”When," says St. Thomas, in his comment on this passage, "we expose ourselves to danger, God abandons us in it." St. Bernardine of Sienna teaches that the counsel of avoiding the occasions of sin is the best of all counsel, and as it were the foundation of religion. “Inter consilia Christi unum celeberrimum, et quasi religiouis fundamentum est, fugere peccatorum occasiones."
3. St. Peter says that ”the devil goeth about seeking whom he may devour." (1 Pet. v. 8.) He is constantly going about our souls, endeavouring to enter and take possession of them. Hence, he seeks to place before us the occasions of sin, by which he enters the soul. ”Explorat," says St. Cyprian, ”an sit pars cujus aditu penetret." When the soul yields to the suggestions of the devil, and exposes herself to the occasions of sin, he easily enters and devours her. The ruin of our first parents arose from their not flying from the occasions of sin. God had prohibited them not only to eat, but even to touch the forbidden apple. In answer to the serpent tempting her, Eve said: "God hath commanded us that we should not eat, and that we should not touch it." (Gen. iii. 3.) But ”she saw, took, and eat” the forbidden fruit: she first looked at it, she then took it into her hands, and afterwards eat it. This is what ordinarily happens to all who expose themselves to the occasions of sin. Hence, being once compelled by exorcisms to tell the sermon which displeased him most, the devil confessed that it was the sermon on avoiding the occasions of sin. As long as we expose ourselves to the occasions of sin, the devil laughs at all