Eusebius of Caesarea : [Isaiah] continues prophetically to show the transformation of all different races of humanity, barbarian and Greek … through the teaching of Christ.… The irrational animals and wild beasts in the passage represent the Gentiles, who are naturally like animals. One who comes from the seed of Jesse will rule over the Gentiles. This is the genealogy of our Savior and Lord, in whom the Gentiles now believe and hope. — PROOF OF THE GOSPEL 3:2 Gregory the Dialogist : For behold, we who seem clothed in religious habit have come together from the diverse condition of the world to faith and to hearing the word of the almighty Lord, and from dissimilar iniquities we have been gathered into the concord of holy Church, so that what is said of the promise of the Church through Isaiah now seems to have been openly fulfilled: "The wolf shall dwell with the lamb, and the leopard shall lie down with the kid." For through the bowels of holy charity the wolf dwells with the lamb, because those who were plunderers in the world rest in peace with the gentle and meek. And the leopard lies down with the kid, because he who was spotted with the stains of his sins consents to be humbled with him who despises himself and confesses himself a sinner. Where it is also added: "The calf and the lion and the sheep shall dwell together," because he who prepares himself as a daily sacrifice to God through a contrite heart, and another who raged severely from cruelty like a lion, and another who perseveres in the simplicity of his innocence like a sheep, have come together in the folds of holy Church. Behold what charity is like, which kindles, burns up, melts together the diversities of minds and reforms them as it were into one appearance of gold. — Homilies on Ezekiel, Book 2, Homily 4 Irenaeus : The predicted blessing, therefore, belongs unquestionably to the times of the kingdom, when the righteous shall bear rule upon their rising from the dead; when also the creation, having been renovated and set free, shall fructify with an abundance of all kinds of food, from the dew of heaven, and from the fertility of the earth: as the elders who saw John, the disciple of the Lord, related that they had heard from him how the Lord used to teach in regard to these times, and say: The days will come, in which vines shall grow, each having ten thousand branches, and in each branch ten thousand twigs, and in each true twig ten thousand shoots, and in each one of the shoots ten thousand clusters, and on every one of the clusters ten thousand grapes, and every grape when pressed will give five and twenty metretes of wine. And when any one of the saints shall lay hold of a cluster, another shall cry out, "I am a better cluster, take me; bless the Lord through me." In like manner [the Lord declared] that a grain of wheat would produce ten thousand ears, and that every ear should have ten thousand grains, and every grain would yield ten pounds (quinque bilibres) of clear, pure, fine flour; and that all other fruit-bearing trees, and seeds and grass, would produce in similar proportions (secundum congruentiam iis consequentem); and that all animals feeding [only] on the productions of the earth, should [in those days] become peaceful and harmonious among each other, and be in perfect subjection to man. And these things are borne witness to in writing by Papias, the hearer of John, and a companion of Polycarp, in his fourth book; for there were five books compiled (συντεταγμένα) by him. And he says in addition, "Now these things are credible to believers." And he says that, "when the traitor Judas did not give credit to them, and put the question, 'How then can things about to bring forth so abundantly be wrought by the Lord.' the Lord declared, 'They who shall come to these [times] shall see.' " When prophesying of these times, therefore, Esaias says: "The wolf also shall feed with the lamb, and the leopard shall take his rest with the kid; the calf also, and the bull, and the lion shall eat together; and a little boy shall lead them. The ox and the bear shall feed together, and their young ones shall agree together; and the lion shall eat straw as well as the ox. And the infant boy shall thrust his hand into the asp's den, into the nest also of the adder's brood; and they shall do no harm, nor have power to hurt anything in my holy mountain." And again he says, in recapitulation, "Wolves and lambs shall then browse together, and the lion shall eat straw like the ox, and the serpent earth as if it were bread; and they shall neither hurt nor annoy anything in my holy mountain, says the Lord." [Isaiah 40:6, etc.] I am quite aware that some persons endeavour to refer these words to the case of savage men, both of different nations and various habits, who come to believe, and when they have believed, act in harmony with the righteous. But although this is [true] now with regard to some men coming from various nations to the harmony of the faith, nevertheless in the resurrection of the just [the words shall also apply] to those animals mentioned. For God is rich in all things. And it is right that when the creation is restored, all the animals should obey and be in subjection to man, and revert to the food originally given by God (for they had been originally subjected in obedience to Adam), that is, the productions of the earth. But some other occasion, and not the present, is [to be sought] for showing that the lion shall [then] feed on straw. And this indicates the large size and rich quality of the fruits. For if that animal, the lion, feeds upon straw [at that period], of what a quality must the wheat itself be whose straw shall serve as suitable food for lions? — Against Heresies (Book V, Chapter 33), Sections 3-4 Irenaeus : I am quite aware that some persons endeavour to refer these words to the case of savage men, both of different nations and various habits, who come to believe, and when they have believed, act in harmony with the righteous. But although this is [true] now with regard to some men coming from various nations to the harmony of the faith, nevertheless in the resurrection of the just [the words shall also apply] to those animals mentioned. For God is non in all things. And it is right that when the creation is restored, all the animals should obey and be in subjection to man, and revert to the food originally given by God (for they had been originally subjected in obedience to Adam), that is, the productions of the earth. But some other occasion, and not the present, is [to be sought] for showing that the lion shall [then] feed on straw. And this indicates the large size and rich quality of the fruits. For if that animal, the lion, feeds upon straw [at that period], of what a quality must the wheat itself be whose straw shall serve as suitable food for lions? — AGAINST HERESIES 5:33.4 Jerome : (Verse 6 and following) The wolf will live with the lamb, and the leopard will lie down with the young goat; the calf, the lion, and the sheep will all stay together, and a small child will lead them. The calf and the bear will graze together; their young ones will lie down together, and the lion will eat straw like an ox. The infant will play near the cobra's den, and the young child will put his hand into the viper's nest. They will not cause harm or destroy on my holy mountain, for the earth will be filled with the knowledge of the Lord, as the waters cover the sea. This also the Jews and our Jewish followers contend will happen literally, that in the glory of Christ, whom they believe will come at the end of the world, all beasts will be tamed, and the former ferocity, the wolf and the lamb will feed together, and the other things with the others, which we now see as contrary to each other. We should ask those who accept everything in the present text as it is written, and do not relate to spiritual understanding, according to the saying of the Apostle, who says: Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ (2 Corinthians 1:3), therefore, the root, and the branch, and the flower should not be understood literally: and when it is said that the earth was struck by the word of God, and the wicked were killed by the breath of his lips, they should be understood as written: and they should be compelled to teach how the Lord's loins are surrounded by incorporeal things with righteousness and truth. But let us also ask them what is worthy of the majesty of the Lord, that the wolf and the lamb may feed together, and the leopard may lie down with the young goat, and the lion may eat straw like the ox, and a small child may put his hand into the hole of the venomous snake? Unless, perhaps, according to the fables of the poets, they will restore to us the golden age of Saturn, in which wolves and lambs will feed together, and rivers will flow with sweet wine, and the sweetest honey will drip from the leaves of trees, and everything will be filled with milk from the fountains. But if they respond that for the happiness of the times these things are to come, so that without anyone's harm, men may enjoy all good things, let them hear from us that nothing is good except virtue, and nothing is evil except vice, as the Psalmist says: Who is the man that desires life, and loves to see good days? Restrain your tongue from evil, and your lips from speaking deceit. Turn away from evil, and do good. (Psalms 34:14; 31:27). But riches, and bodily health, and abundance of all things, and their contraries, poverty, weakness, and lack, even among the philosophers of the world, are neither reckoned among good things nor among bad things, but are called indifferent. And the Stoics also, who agree in most respects with our doctrine, consider nothing to be good except honesty and virtue alone, and nothing to be evil except shamefulness. We have briefly stated these things in order to convincingly refute those who Judaize while in a deep sleep. However, through the life-giving spirit, understanding is easy. For Paul, formerly a persecutor and destroyer of the Church, is like a wolf, of whom it is said: Benjamin is a ravenous wolf; he dwelt with the lamb, or like Ananias, by whom he was baptized (Gen. XLIX, 27; Acts VIII), or like the Apostle Peter, to whom it was said: Feed my lambs (John XXI). And the leopard, who previously did not change its spots, lies down in the fountain of the Lord with the kid, not the one on the left, but the one sacrificed on the Lord's Passover. And this must be noted, that neither the lamb nor the kid dwell and lie down with the wolf and the leopard, but the wolf and the leopard imitate the innocence of the lamb and the kid. The lion also will dwell together with the most ferocious, and the sheep, and the calf. This we see daily in the Church, the rich and the poor, the powerful and the humble, kings and commoners dwelling together, and being ruled in the Church by little children, whom we understand to be the Apostles, and by Apostolic men, unskilled in language, but not in knowledge. When those who are bound together in the discipline of the Lord are united among themselves, so that their families are also joined, then this will be fulfilled: their young ones will rest together. The lion will also not eat meat, but straw, so that it may feed on simple food. And here it must be observed that it is not the ox that eats meat, but the lion that eats straw. I think that in Holy Scriptures, straw is understood as simple words. However, wheat and the inner marrow represent the meaning that is found in the letter: and it often happens that people of the world, who are ignorant of the mysteries, feed on simple reading of the Scriptures. The infant, who is small in wickedness, also puts his hand into the snake's hole and drives away the demons from the bodies of those possessed. But the child who is weaned is no longer nourished by milk but now eats solid food. He puts his hand into the cave of the ruler, that is, into the dwelling place of Satan himself, and from there he pulls him out. Hence, the power was given to the Apostles to tread on serpents and scorpions and over all the power of the enemy (Luke 10). However, poisonous animals will never be able to harm or kill those who dwell in the holy mountain of God, which is interpreted as the Church, as it is said in the Gospel: A city set on a hill cannot be hidden (Matt. 5:14). But lest we think that this is said about Mount Zion according to the error of the Hebrews, the following verse of the Gospel preaching shows the sacraments: For the earth shall be filled with the knowledge of the Lord (Isaiah 11:9). This is what was said above more obscurely: The wolf shall dwell with the lamb, and the leopard shall lie down with the kid (Isaiah 11:6). And according to their custom, the words of the prophets are revealed at the end: As the waters cover the sea (Habakkuk 2:14). Just as the depths of the sea are covered by the waters of the sea, that is, the land covered by the waves, so the knowledge of the Lord will fill the whole earth. The blessed Apostle Peter also testifies to the diverse conjunction of previous manners in the linen cloth (Acts 10), which was sent down from heaven, having four elements, which we understand as representing the four regions of the world, so that we may know the earth filled with the knowledge of God: in this vessel there were quadrupeds, and serpents, and wild beasts, and birds of the sky, so that just as the Ark did in the Flood, the Church may provide in the world. — Commentary on Isaiah Jerome : However, through the life-giving spirit, understanding is easy. For Paul, formerly a persecutor and destroyer of the Church, is like a wolf, of whom it is said: Benjamin is a ravenous wolf; he dwelt with the lamb, or like Ananias, by whom he was baptized, or like the Apostle Peter, to whom it was said: Feed my lambs. And the leopard, who previously did not change its spots, lies down in the fountain of the Lord with the kid, not the one on the left, but the one sacrificed on the Lord's Passover. And this must be noted, that neither the lamb nor the kid dwell and lie down with the wolf and the leopard, but the wolf and the leopard imitate the innocence of the lamb and the kid. The lion also will dwell together with the most ferocious, and the sheep, and the calf. This we see daily in the Church, the rich and the poor, the powerful and the humble, kings and commoners dwelling together, and being ruled in the Church by little children, whom we understand to be the Apostles, and by Apostolic men, unskilled in language, but not in knowledge. When those who are bound together in the discipline of the Lord are united among themselves, so that their families are also joined, then this will be fulfilled: their young ones will rest together. The lion will also not eat meat, but straw, so that it may feed on simple food. And here it must be observed that it is not the ox that eats meat, but the lion that eats straw. I think that in Holy Scriptures, straw is understood as simple words. However, wheat and the inner marrow represent the meaning that is found in the letter: and it often happens that people of the world, who are ignorant of the mysteries, feed on simple reading of the Scriptures. The infant, who is small in wickedness, also puts his hand into the snake's hole and drives away the demons from the bodies of those possessed. But the child who is weaned is no longer nourished by milk but now eats solid food. He puts his hand into the cave of the ruler, that is, into the dwelling place of Satan himself, and from there he pulls him out. Hence, the power was given to the Apostles to tread on serpents and scorpions and over all the power of the enemy. However, poisonous animals will never be able to harm or kill those who dwell in the holy mountain of God, which is interpreted as the Church, as it is said in the Gospel: A city set on a hill cannot be hidden. — Commentary on Isaiah Jerome : Not of course that the ox may learn ferocity from the lion but that the lion may learn docility from the ox. — LETTER 130.8 Jerome : And I will strike a deal with them in that day, with the beasts of the field and with the birds of the sky and with the creeping things of the ground; and I will shatter from the land, the bow, the sword, and war. And I will cause them to sleep with security. (LXX) And I will make a covenant with them in that day, with the beasts of the field, and with the birds of the sky, and with the creeping things of the earth; and I will break the bow, and the sword, and war out of the land, and I will cause them to dwell in hope. When all the words of the opposing religion have been taken away from the people confessing the Lord, and he calls me, "my husband," and not "Baal," that is, "my idol," then I will strike a deal and agreement with them with the beasts of the field and the birds of the sky and with the creeping things on the ground. From this time on, Isaiah speaks: "The wolf will live with the lamb, and the leopard will lie down with the goat. The calf, the lion, and the sheep will live together, and a small child will lead them all. The calf and the bear will graze and their young will rest together. The lion will eat straw like an ox." He desires neither flesh nor blood, but feeds on clean and simple foods. When Peter was instructed to welcome Cornelius among the nations, it was revealed and commanded that he should eat all kinds of animals and recognize nothing as unclean, which he received with thanksgiving. Later, he was told: "What God has cleansed, you must not call common." Therefore, at the coming of the Lord and Savior, after his triumphs in the resurrection, and his ascent to the Father, two walls were joined together by a corner stone, made one by him who made both: and he called her who was called, "Without mercy, mercy obtained": and those who were said, "Not my people," his people: and with all things pacified, the bow and sword shall be brought to nothing, and war shall cease. For there will no longer be a need for weapons of those who fight, when those who fight no more exist. Israel shall be joined to the Gentiles, and that of Deuteronomy shall be fulfilled: "Rejoice, ye Gentiles, with his people". "God is known in Judah; his name is great in Israel." — Commentary on Hosea John Chrysostom : The prophet also foretold the kinds of people from whom the church would be established. Not only the meek and the mild and the good would form the church. The wild, the inhuman and men whose ways were like those of wolves and lions and bulls would flock together with them and form one church. Hear how the prophet foretold the diversity of this flock when he said, "Then a wolf shall feed with a lamb." And by this he showed the simplicity of the way of life the church's rulers would live. — DEMONSTRATION AGAINST THE PAGANS 6:8 John Chrysostom : When he saith, "Every valley shall be filled, and every mountain and hill shall be brought low, and the rough ways shall be made smooth;" he is signifying the exaltation of the lowly, the humiliation of the self-willed, the hardness of the law changed into easiness of faith. For it is no longer toils and labors, saith he, but grace, and forgiveness of sins, affording great facility of salvation. Next he states the cause of these things, saying, "All flesh shall see the salvation of God;" no longer Jews and proselytes only, but also all earth and sea, and the whole race of men. Because by "the crooked things" he signified our whole corrupt life, publicans, harlots, robbers, magicians, as many as having been perverted before afterwards walked in the right way: much as He Himself likewise said, "publicans and harlots go into the kingdom of God before you," because they believed. And in other words also again the prophet declared the self-same thing, thus saying, "Then wolves and lambs shall feed together." For like as here by the hills and valleys, he meant that incongruities of character are blended into one and the same evenness of self-restraint, so also there, by the characters of the brute animals indicating the different dispositions of men, he again spoke of their being linked in one and the same harmony of godliness. — HOMILIES ON THE GOSPEL OF Matthew 10:3 John Chrysostom : I have heard many saying, "The threats of a king are like the wrath of a lion;" being full of dejection and lamentation. What then should we say to such? That He who said, "The wolves and the lambs shall feed together; and the leopard shall lie down with the kid, and the lion shall eat straw like the ox," will be able to convert the lion into a mild lamb. Let us therefore supplicate Him; let us send an embassy to Him; and He will doubtless allay the Emperor's wrath, and deliver us from the impending distress. — HOMILIES CONCERNING THE STATUES 3:5 Papias of Hierapolis ((as quoted by Irenaeus, AD 202)) : The elders who saw John, the disciple of the Lord, related that they had heard from him how the Lord used to teach in regard to these times, and say: The days will come, in which vines shall grow, each having ten thousand branches, and in each branch ten thousand twigs, and in each true twig ten thousand shoots, and in each one of the shoots ten thousand clusters, and on every one of the clusters ten thousand grapes, and every grape when pressed will give five and twenty metretes of wine. And when any one of the saints shall lay hold of a cluster, another shall cry out, "I am a better cluster, take me; bless the Lord through me." In like manner [the Lord declared] that a grain of wheat would produce ten thousand ears, and that every ear should have ten thousand grains, and every grain would yield ten pounds (quinque bilibres) of clear, pure, fine flour; and that all other fruit-bearing trees, and seeds and grass, would produce in similar proportions (secundum congruentiam iis consequentem); and that all animals feeding [only] on the productions of the earth, should [in those days] become peaceful and harmonious among each other, and be in perfect subjection to man... Now these things are credible to believers... When the traitor Judas did not give credit to them, and put the question, 'How then can things about to bring forth so abundantly be wrought by the Lord.' the Lord declared, 'They who shall come to these [times] shall see.' — Against Heresies (Book V, Chapter 33), Section 4 Quodvultdeus : The promise will be fulfilled when kings, peasants and the poor all gather equally around the one table of Christ (believed and seen by us); according to the prophet Isaiah: "Then the wolf will dine with the lamb, and the leopard will lie down with the kid, and the cow, the lion and the lamb will eat straw together, and a small child will feed them." — THE BOOK OF PROMISES AND PREDICTIONS OF GOD 3:39.46