Isaiah 49:25-26

For it is not the spirit (which is incorporeal) but the flesh that is eaten, suffering the bites of savage beasts. And then let Zion learn that it is indeed all flesh that will see the salvation of God, that its Redeemer and Savior is he who wrestled with Jacob or was the helper to Jacob’s strength as Christ, though overwhelmed by his crucifiers, blessed them in his suffering.

(Verse 24 and following) Will the prey be taken from the mighty, or what is captured by the strong be saved? For thus says the Lord: Indeed, the captivity will be taken from the mighty, and what has been taken by the strong will be saved. But I will judge those who have judged you, and I will save your children. And I will feed your enemies with their own flesh, and they will be drunk with their own blood as with wine. And all flesh will know that I am the Lord, your Savior, and your strong Redeemer, Jacob. LXX: Will anyone take spoils from a giant? And if anyone unjustly leads captive, will they be saved? Thus says the Lord: If anyone captures a giant, they will receive spoils, and the one who receives from the strong will be saved. But I will execute my judgment. And I will deliver my sons, and those who have afflicted you will eat their own flesh, and they will drink their own blood like new wine, and they will become drunk. And all flesh will know that I am the Lord, who delivered you, and the helper of the strength of Jacob. Our Lord and Savior, who had previously spoken through Isaiah, repeats the same meaning in the Gospel: how can anyone enter the strong man's house and plunder his goods, unless he first binds the strong man? And then he will plunder his house (Mark 3). The strong man and giant is the devil, who had subjugated all peoples under his empire, daring to say to the Savior: All these things have been delivered to me, and I will give them to you if you will fall down and worship me (Matthew 4, 9). The world is indeed placed in the power of the evil one (1 John 5), whom no righteous person could overcome; nor, according to Amos, could one take prey from the mouth of a lion (Amos 3). Therefore, given the question that no one can overcome a strong and mighty one, nor save what was taken from him, the Lord responded that by His coming, all things would be accomplished: namely, that the nations previously captured by the giant would be taken away, and all his possessions and entire household would be divided among the Apostles. Fulfilling that which is written: 'The beloved king of virtues, and of beauty, divided the spoils of the house.' For it is he who ascending on high, led captivity captive, and gave gifts to men (Psalm 67:13, 19; Ephesians 4): namely, those who were previously captured unto death, he received into life. Wherefore Symmachus interpreted it more explicitly: 'But even the strong captivity shall be taken away, and the terrible spoils shall be preserved.' Desiring the strong and terrible devil to be understood, who was overcome by the power of the Lord. Therefore, the Lord who judges those who oppressed Zion, whether he judges their judgement or liberates the children of those who were captured by the giant, he will save and feed his adversaries with their own flesh, and he will make them drunk with wine, so that they will be satisfied not with the death of others, but with their own death. And those who are flesh, because they have lost God's spirit, let them feed on their own flesh. Indeed, the Holy One speaks of this in the Psalms: When those who afflict me come near, to devour my flesh (Ps. 26:2). For it is not the incorporeal spirit, but the flesh that is devoured by the bites of fierce beasts. And then Zion will say: truly all flesh that sees the salvation of God, that the Redeemer and Savior is the one who struggled with Jacob, or the one who helped the strength of Jacob: so that in his suffering, he would bless those who crucify him: Father, forgive them: for they do not know what they are doing (Luke XXIII, 34).

Our Lord Jesus Christ came into the house of the strong man … he raided it and, throwing away the broken chains and the bonds of dark hell, he gave him over to the judgment of the great day to be kept for punishment.… Then Christ has conquered, and he has passed the victory on to us.… For he is the sole cause of our salvation. Therefore, he is the boast of the might of the saints, as Paul the most wise says: "I can do all things through Christ who gives me strength." …For Christ gave us the ability to overcome the murderous dragon so that we can take spoil from it, and we are saved from it as he sends us the victory to everlasting life for glory, praise and the kingdom of heaven.… For Christ said, "I have given you authority to tread on snakes and scorpions and over all the power of the enemy." … This is just what we take from the strong one, that is, from Christ. Since he is the Lord of powers, we have been saved and have the victory.

Whoever suffers anything on account of me obtains help from me, the One who gives strength to you, Jacob, that is, all of you from the seed of Jacob. I have said how he sends them prophetic words in the mouth of the holy apostles and evangelists that they are from Jacob, which clearly relates to the flesh. And it is small wonder that Jacob was called the supplanter, that is, the supplanter of Satan and of those who casually and with youthful neglect rush into the noose of sins.

For “it is I,” he says, who “am God the first, and I am he for the things to come.” It is he who has made us and judged us to be worthy of salvation, he who has freed us from the original deception, he who has promised us the kingdom of God, of which may we enjoy the grace of him who has saved us and to whom is due glory for ages of ages.

Well may that ancient ravager [the devil] mourn that he has lost his prey, for we see it is fulfilled as we have heard it foretold by the prophet. “Yes,” he said, “captives can be taken from a warrior and booty rescued from a tyrant.” The peace of Christ has destroyed the wall of discord built by the devil, and the house that was divided into mutual slaughter is now joined by the cornerstone, which is Christ.