Matthew 12:45

45.He taketh with him seven other spirits The number seven is here used indefinitely, as in many other passages. By these words Christ shows that if we fall from his grace, our subjection to Satan is doubled, so that he treats us with greater cruelty than before, and that this is the just punishment of our slothfulness. (149) Let us not then suppose that the devil has been vanquished by a single combat, because he has once gone out of us. On the contrary, let us remember that, as his lodgment within us was of old standing, ever since we were born, he has knowledge and experience of all the approaches by which he may reach us; and that, if there be no open and direct entrance, he has dexterity enough to creep in by small holes or winding crevices. (150) We must, therefore, endeavor that Christ, holding his reign within us, may block up all the entrances of his adversary. Whatever may be the fierceness or violence of Satan’s attacks, they ought not to intimidate the sons of God, whom the invincible power of the Holy Spirit preserves in safety. We know that the punishment which is here threatened is addressed to none but those who despise the grace of God, and who, by extinguishing the light of faith, and banishing the desire of godliness, (151) become profane.