Ps 90:13

“This power the Creator conferred on his Christ first of all, even as the ninetieth psalm [LXX] says of him: "You shall tread on the lion and the cobra; the young lion and the serpent you shall trample under foot." Isaiah also says, "In that day the Lord God shall draw his sacred, great and strong sword" (even his Christ) "against that dragon, that great and tortuous serpent; and he shall slay him in that day." But when the same prophet says, "The way shall be called a clean and holy way; over it the unclean thing shall not pass, nor shall there be any unclean way; but the dispersed shall pass over it, and they shall not err therein; no lion shall be there, nor any ravenous beast shall go up thereon; it shall not be found there," he points out the way of faith, by which we shall reach God; and then to this way of faith he promises this utter crippling and subjugation of all harmful animals.”

“His next remark was, "Have not these inferior powers had assigned to them by God different departments, according as each was deemed worthy?" But this is a question which requires a very profound knowledge. For we must determine whether the Word of God, who governs all things, has appointed wicked demons for certain employments, in the same way as in states executioners are appointed, and other officers with cruel but needful duties to discharge; or whether as among robbers, who infest desert places, it is customary for them to choose out of their number one who may be their leader,—so the demons, who are scattered as it were in troops in different parts of the earth, have chosen for themselves a chief under whose command they may plunder and pillage the souls of men. To explain this fully, and to justify the conduct of the Christians in refusing homage to any object except the Most High God, and the First-born of all creation, who is His Word and God, we must quote this from Scripture, "All that ever came before Me are thieves and robbers: but the sheep did not hear them;" and again, "The thief cometh not, but for to steal, and to kill, and to destroy;" and other similar passages, as, "Behold, I have given you authority to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you;" and again, "Thou shalt tread upon the lion and adder: the young lion and the dragon shalt thou trample under feet." But of these things Celsus knew nothing, or he would not have made use of language like this: "Is not everything which happens in the universe, whether it be the work of God, of angels, of other demons, or of heroes, regulated by the law of the Most High God? Have these not had assigned to them various departments of which they were severally deemed worthy? Is it not just, therefore, that he who serves God should serve those also to whom God has assigned such power?" To which he adds, "It is impossible, they say, for a man to serve many masters."”

“Wild animals are a proof of our faith. Have you trusted in the Lord? "You shall walk on the asp and the basilisk; and you shall trample under foot the lion and the dragon." You have the power through faith to walk on serpents and scorpions. Or, do you not observe that the viper that fastened onto Paul when he was gathering sticks inflicted no harm because the holy man was found to be full of faith? Yet, if you are incredulous, do not fear the wild beast more than your own lack of faith, through which you have made yourself an easy prey to every form of corruption.”

“"Thou shall go upon the asp and the basilisk; the lion and the dragon shall you tread under your feet" [Psalm 91:13]. You know who the serpent is, and how the Church treads upon him, as she is not conquered, because she is on her guard against his cunning. And after what manner he is a lion and a dragon, I believe you know also, beloved. The lion openly rages, the dragon lies secretly in covert: the devil has each of these forces and powers. When the Martyrs were being slain, it was the raging lion: when heretics are plotting, it is the dragon creeping beneath us. You have conquered the lion; conquer also the dragon: the lion has not crushed you, let not the dragon deceive you....A few women in the Church have bodily virginity: but the virginity of the heart all the faithful have. In the very matter of faith he feared that the heart's virginity would be corrupted by the devil: and those who have lost it, are uselessly virgins in their bodies. What does a woman who is corrupt in heart preserve in her body? Thus a Catholic married woman is before a virgin heretic. For the first is not indeed a virgin in her body, but the second has become married in her heart; and married not unto God as her husband, but unto the dragon. But what shall the Church do? The basilisk is the king of serpents, as the devil is the king of wicked spirits.”

“But what is said to Christ? "And you shall trample down the lion and the serpent." The lion because of his open danger, the serpent because of his concealed deception. The serpent drove Adam out of paradise; the very same one, as a lion, persecuted the church, as Peter says: "Your adversary the devil goes about as a roaring lion seeking whom he may devour." Let the devil not appear to you to have lost his rage; when he flatters, he must be feared the more.”

“However, we should not be without anxiety, dearly beloved, because we know that [God] is keeping his patience for such a long time. The fact that such great things happen in the world and he still does not avenge them indicates patience, not carelessness. God has not lost his power but is preserving us for repentance. Yet, the longer he awaits your amendment, the harsher will be your punishment if you refuse to amend. God indeed holds the sword, and he wishes to strike sin; we, on the contrary, defend our sins because we love them. Thus, we who should be the accusers of our sins become their defenders. Truly, dearly beloved, God does not want to kill the sinner, but his sin. Like a good doctor he wants to strike the disease, not the person who is ill. But, what is worse, we often despise the doctor and love our sickness: we love our sin and despise God. Sin, indeed, is like this, a dragon, a viper; but concerning the Lord it is written, "You shall walk on the lion and the cobra; and you shall trample under foot the young lion and the serpent." We, on the other hand, embrace our sins like lions and dragons. But our God, who wants to punish sin and save the sinner, daily exclaims to humanity: Cast off your sin from you, and without you it will die. If you refuse to throw aside your sin, you will perish with it, for sin cannot go unpunished. God wants to kill sin, not to strike the sinner.”