Job 41:14

This is not the fear of God but the fear that is all around [the Leviathan's] teeth. But if you have Christ in you, you must not be worried by this fear. Indeed, you will fear the Lord God and will fear no one else.

Why did he not say, "Who can disclose his face?" What is the purpose of these doors? "Who can open," he says, "the doors of his face?" In order to understand what is said here, let us take the example of the actors, who wear masks not in order to show what they are but in order to show what they want to look like. Indeed, those who play a certain character on the scene wear masks, so that they sometimes play the role of a general or a king, and often of a woman. Therefore, their real face is concealed, and they do not show what they are, while only what they want to look like is seen. The dragon acts in the same way. He never shows his face, but by assuming a mask in order to deceive humankind, he takes advantage of it. The enemy has many masks and wears a mask of virtue for any vice. And who can detect the mask that he wears? Who can disclose and show how the dragon is inside? Such are also his other followers, "who come to you in sheep's clothing but inwardly are ravenous wolves."

Who will open the gates of his face? In a circle is the terror of his teeth. 46. The 'gates of his face' are wicked teachers, who are called the gates of his face for this reason, because, every one enters through them, in order that this Leviathan may be seen, as it were, in the princedom of his power. For as sacred Scripture is wont to call holy men gates of Sion, [Ps. 87, 2] (for Sion is by interpretation, 'watching,' and we deservedly call holy preachers the gates of Sion, because by their life and doctrine we enter the secrets of heavenly contemplation,) so also are the teachers of errors signified by the gates of this Leviathan; for when their false preaching is received, the way of perdition is opened to their wretched hearers. But these gates are generally opened before the eyes of men, in order to admit, but yet are closed in order to seize; because in appearance they present right things, but in their doings they persuade evil things. They are closed therefore in order to seize, because they are kept by outward hypocrisy from being discerned within. But yet the Lord opens them with wonderful power; because He makes the hearts of hypocrites comprehensible to His Elect. Who, therefore, will open the gates of His face? Thou understandest, except Myself, Who make manifest with clear understanding to My Elect the teachers of errors who are concealed beneath the semblance of sanctity. And because Antichrist, who rages with a twofold error, and endeavours both to draw the hearts of men to himself by sending his preachers, and to bend them by exciting the powers of the world, will also gain possession of these chief powers, the Lord well added concerning this Leviathan, saying, In a circle is the terror of his teeth. 47. For He wished to change the expression, and, in another phrase, to call these his 'teeth,' whom He had above called 'gates.' For false preachers are his 'gates,' because they open the entrance to perdition. They are his 'teeth,' because they break down from the solidity of truth those whom they seize in error. For as by the teeth of Holy Church we understand those who crush by their preachings the hardness of sinners, (whence it is said to her by Solomon, Thy teeth as flocks of sheep that have been shorn, coming up from the washing; [Cant. 4, 2] and they are deservedly compared to shorn and washed sheep, because when assuming an innocent…