1 Woe to the land shadowing with wings, which is beyond the rivers of Ethiopia: 2 That sendeth ambassadors by the sea, even in vessels of bulrushes upon the waters, saying, Go, ye swift messengers, to a nation scattered and peeled, to a people terrible from their beginning hitherto; a nation meted out and trodden down, whose land the rivers have spoiled! 3 All ye inhabitants of the world, and dwellers on the earth, see ye, when he lifteth up an ensign on the mountains; and when he bloweth a trumpet, hear ye. 4 For so the LORD said unto me, I will take my rest, and I will consider in my dwelling place like a clear heat upon herbs, and like a cloud of dew in the heat of harvest. 5 For afore the harvest, when the bud is perfect, and the sour grape is ripening in the flower, he shall both cut off the sprigs with pruning hooks, and take away and cut down the branches. 6 They shall be left together unto the fowls of the mountains, and to the beasts of the earth: and the fowls shall summer upon them, and all the beasts of the earth shall winter upon them. 7 In that time shall the present be brought unto the LORD of hosts of a people scattered and peeled, and from a people terrible from their beginning hitherto; a nation meted out and trodden under foot, whose land the rivers have spoiled, to the place of the name of the LORD of hosts, the mount Zion.
[AD 235] Hippolytus of Rome on Isaiah 18:1-2
The word of Isaiah: “Woe to the wings of the vessels of the land, beyond the rivers of Ethiopia: (woe to him) who sends sureties by the sea, and letters of papyrus [on the water; for nimble messengers will go] to a nation anxious and expectant, and a people strange and bitter against them; a nation hopeless and trodden down.”But we who hope for the Son of God are persecuted and trodden down by those unbelievers. For the “wings of the vessels” are the churches; and the sea is the world, in which the church is set like a ship tossed in the deep but not destroyed. For she has with her the skilled pilot, Christ. And she bears in her midst also the trophy over death, for she carries with her the cross of the Lord. For her prow is the east, and her stern is the west, and her hold is the south, and her tillers are the two Testaments. And the ropes that stretch around her are the love of Christ, which binds the church. And the net which she bears with her is the layer of the regeneration which renews the believing from which also come these glories. As the wind, the Spirit from heaven is present by whom those who believe are sealed. She has also anchors of iron accompanying her, that is, the holy commandments of Christ himself, which are strong as iron. She also has mariners on the right and on the left, assessors like the holy angels by whom the church is always governed and defended. The ladder in her leading up to the sail-yard is an emblem of the passion of Christ, which brings the faithful to the ascent of heaven. And the topsails aloft on the yard are the company of prophets, martyrs and apostles, who have entered into their rest in the kingdom of Christ.

[AD 420] Jerome on Isaiah 18:1-3
(Chapter 18—Verse 1 and following) Woe to the land of buzzing wings, which is beyond the rivers of Ethiopia, that sends ambassadors by sea, in vessels of papyrus on the waters. Go, you swift messengers, to a nation tall and smooth-skinned, to a people feared near and far, a mighty nation and conquering, whose land the rivers divide. All you inhabitants of the world, you who dwell on the earth, when a signal is raised on the mountains, you will see it, and when a trumpet is blown, you will hear it. LXX: Woe to the land of winged ships beyond the rivers of Ethiopia, who send ambassadors by sea in papyrus vessels over the water. Go, swift messengers, to a tall and smooth-skinned nation, to a people feared far and wide, a powerful and oppressive nation whose land the rivers divide. All you people of the world, you who live on the earth, when a banner is raised on the mountains, you will see it, and when a trumpet sounds, you will hear it. I have placed both editions in the most obscure prophecy so that nothing may seem to be lacking to those who want to understand what is written. At the same time, I greatly admire those who think that our faith and Christian hope are satisfied with simplicity, because it is written: The commandment of God is a clear light, enlightening the eyes (Ps. XIX, 9): and that we should not seek more than what is commanded, but that what is commanded should be done: for this reason, both the whole Scripture and the Prophets are specifically involved in the mysteries of the future, so that they may provoke us to understanding and to what is said in the Gospel: Ask and you shall receive, seek and you shall find, knock and it shall be opened to you. Therefore, since I have explained the history and what is contained in Hebrew in the fifth book, now I will explain what seems to me according to the allegory. Perhaps a discerning reader may inquire what the Vision, or the Burden of Damascus, the sounding cymbal, and the other things that follow mean. After the calling of the Gentiles was mentioned, along with the objection of the Jews and their election, those who believed through the Apostles, and then the multitude of the Gentiles and the persecutors who were compared to the waves of the sea: it followed that the prophetic discourse would also announce the heresies that have troubled and continue to ravage the Church, which, while the master of the household slept, sowed weeds in the field of the Church (Matthew 13). And they are called cymbals, lacking the love of God, according to the saying of the Apostle: 'If I speak with the tongues of men and of angels, but do not have love, I have become a noisy gong or a clanging cymbal' (1 Corinthians 13:1). And not only a cymbal with its harsh resounding sound, but because of the lightweight heretical discourse that flows in different directions, they are called cymbals of wings, or according to the Septuagint, wings of ships, who, promising great goods, sail in the waves of this world. But understand the wings of the ships, the sails by which they are suspended and drawn. And beautifully he called them the wings of the ships, for every heretic promises lofty things and boasts of having wings, yet he clings to the salty waves and does not depart far from land, and in the middle of his course he suddenly suffers shipwreck. Hence the Eagle, as a symbol of the ship, interpreted the shadow of the wings, for eagles do not have wings, but a resemblance to wings. And he brings forth the fact that which is beyond the rivers of Ethiopia, signifies that all heretics are conquered by their impiety. For example: Epicurus says that there is no providence, and that pleasure is the greatest good. By comparison, Marcion is even more wicked, and all heretics who tear apart the Old Testament. For when they reject providence, they accuse the Creator, and assert that He has erred in most of His works, and has not done them as He should have. For what benefit do serpents, scorpions, crocodiles, fleas, bugs, and mosquitoes bring to human beings? Therefore, these people across the rivers of Ethiopia are sending messengers into the sea of this world, that is, their disciples, who are said to carry their volumes, rightly called papyrus vessels, that is, papers carried on the water, which are quickly erased. For just as books are quickly obscured and destroyed by water and moisture, so too their message and teaching, once it appears to possess some strength in the beginning, passes away and slips away. Therefore, through irony, it is said to them: O Angels of heretics, go quickly. These false apostles, deceitful workers, who transform themselves into apostles of Christ, are referred to as such by the blessed apostle Paul (2 Cor. XI). And go to the nation torn and ravaged: torn from God and torn apart by the bites of heretics. To a horrible people; for there is nothing more horrible than blasphemy, which lifts up its own mouth in arrogance. After which there is no other people; for every sin when compared to blasphemy is lighter. A people waiting, waiting, and trampled upon. For all heretics promise themselves celestial things, and they promise great things, and yet they are trampled upon by demons. Whose land the rivers have plundered, which do not have waters from the sky, but from the earth. For what corner is there, what remote wilderness of the earth, to which the polluted speech of heretics does not reach? Therefore, all who dwell and live in the world, lift up their eyes to the sign of the heretics, which is raised as if on mountains, and they hear the sound of the trumpet, that is, their teaching. These things are according to Hebrew. Furthermore, according to the Seventy, the wings of the heretics lament, which fly like ships across the sea of this age, and they surpass the impiety of the Gentiles, whom Scripture now calls Ethiopians: and it is said about their teaching and their language: You who send books of this age into the sea, the hostages of your perversity, and letters to deceive those who will read them. The swift messengers go to the high and foreign people, and the most wicked. For no ecclesiastics have so much zeal for good as heretics have for evil, and they believe they will gain advantage by deceiving others and destroying those who are already doomed. But this people is called exalted because of their pride: and foreign and wicked because they are estranged from God. Truly a people without hope, and oppressed, whose rivers throughout the whole earth imitate the dwelling of the Church, so that they may find for themselves a home and a region, in which they may raise the sign of their teaching, in which they may sound the trumpet of the Scriptures.

[AD 420] Jerome on Isaiah 18:1
(Chapter XVIII, Verse 1.) Woe to the land with the sound of wings beyond the rivers of Ethiopia. The Hebrew word Selsel (), which Symmachus interpreted as noise, Theodotion as birds, and we translate as cymbal. Aquila translated bis umbram. But it should be known that umbra Sel () is said, but here the syllable itself is doubled. From which we can understand the saying: Woe to the land that promises help in the shadow of its wings. And as the Scripture says: Whoever dwells in the shelter of the Most High will rest in the shadow of the Almighty (Psalm XC, 1), for which it is written in Hebrew, He will dwell in the shadow of the Omnipotent: boasting to have the likeness of God herself, and in danger promises to aid others. But it signifies either No, the city of Egypt, which is now called Alexandria, or Egypt itself, in which Jerusalem has always relied on like a bruised reed, which, when broken, pierces the hand of the one leaning on it. And here is the most beautiful order: just as in the previous Vision the prophetic word threatened Damascus, that the ten tribes would have help in it, begging for the mercy of God; so now also the desolation of Egypt is proclaimed, for which the invocation of God has been neglected. For it is the land itself that is beyond the rivers of Ethiopia, that is, beyond the streams of the Nile river, which no one doubts flows from Ethiopia into Egypt. Egypt can be called the granary of the world because of the abundance of crops; indeed, the swift and rapid flight of birds produces the sound of a cymbal. Some interpret this as referring to the Roman Empire, which sends ambassadors to the sea and on papyrus vessels over the waters, and they relate all history to the times of Vespasian and Titus, during which Jerusalem was destroyed. But this does not befit our faith, that the Lord should threaten the Roman Kingdom, wherefore He has overthrown the impious nation, and again say that gifts are to be brought to Mount Zion, unless perhaps we understand these things spiritually in the Church.

[AD 444] Cyril of Alexandria on Isaiah 18:1-2
Someone might wonder and say to himself, “Why does the prophetic oracle addressed to Damascus now mention the land that is beyond the rivers of Ethiopia?” At certain times the Israelites foolishly abandoned God the Savior of all and fell into the error of worshiping many gods. Paying no heed whatsoever to the law given by Moses, they were chastised by God, at times through foes who rose up against them and at times by other catastrophes. Although they should have repented and been healed, ceased their wicked way, walked in the commandments and sought help from God, they made alliances with their neighbors, first with the kings in Damascus, then with those in Egypt. Not only this. They also embraced the gods of the nations that had come to their aid and wasted no time in emulating their ways. Hence the prophet now turns his attention to the Egyptians.The Israelites, in particular those living in Jerusalem, had approached the Egyptians and pleaded with them to become allies. They needed their support because they were being invaded by the Babylonians. As God says in the words of the prophet, “Woe to those who go down to Egypt for help, who trust in horses and chariots.” The Egyptians were zealous in their devotion to idols. Therefore he calls them a people desperate and beaten down. Desperate because they did not know the one who is by nature truly God, beaten down because they had allowed their minds to become subject to the deceptions of demons, trodden down under their feet.

[AD 420] Jerome on Isaiah 18:2
(Verse 2.) He who sends envoys to the sea, and in papyrus vessels on the waters. Go, swift angels, to a nation torn and ravaged, to a fearsome people after whom there is no other, to a nation waiting and trampled, whose rivers they have plundered. Among the Hebrews and Egyptians and the Egyptians themselves and the Egyptians, they are called by one name, Mesraim. This saying is have, so that no one may get stuck on the word, when they find a masculine word for a feminine gender, that is, for land a man, because even now it is said: He who sends envoys to the sea, that is, Mesraim itself, the Egyptian himself, because from Alexandria, which was then, as I said, called No, envoys were sent to Jerusalem and in papyrus vessels, that is, in letters, or ships, promising their help to them, saying: Go swiftly to the torn people of the Jews, and torn by the assault of the Assyrians; to the people once fearsome, who wielded the command of God, to whose power no one else can be compared: to a nation that always awaited the help of God, and yet is trampled by men: whose land rivers, that is, different kings, have ravaged. Others, however, think that the apostrophe is directed to the Lord, and the meaning is: O God, who sends prophets into the sea of this world, and like sailors through letters, warns the people, commanding them with your messages: go quickly to my torn and convulsed people, to the strongest people, who once terrified all nations around, who always waited for God's help, and because of the greatness of their sins, which they hope for, they do not deserve to receive it: whose land was ravaged by the kings of various nations, and so on. Eusebius of Caesarea, promising a historical interpretation in the title, wanders off into various meanings, so that when I read his books, I found something entirely different from what the index promised. Wherever he runs out of history, he moves on to allegory, and in this way he combines things that are separate, so that I marvel at his skill in joining together new elements of language into one unity of stone and iron. I mention this briefly, so that no one thinks that we have borrowed what we say from his sources; for even in the present chapter, he says that prophecy is directed against the Jews and Jerusalem, because at the beginning of the Christian faith they sent letters to all the nations, urging them not to accept the passion of Christ; and they sent letters even to Ethiopia and the Western regions, and with the dissemination of this blasphemy they have filled the whole world.

[AD 420] Jerome on Isaiah 18:3
(Verse 3.) All the inhabitants of the world who dwell on the earth, when the signal is raised on the mountains, you will see and hear the sound of the trumpet. All the nations, he says, around, when you hear my command, like a signal raised on the mountains, and my authority, like the sound of a triumphantly resounding trumpet, then you will see what I have ordered.

[AD 420] Jerome on Isaiah 18:4
(Verse 4) Because this is what the Lord said to me: I will rest, and I will consider in my place. What is it that the Lord said to the Prophet? This is what follows: until what I have commanded comes, I will rest in my seat: as the Jews believe, in the Temple; as we believe, in heaven. And I will consider, he says, the coming of the end of things.

Just as the midday light is bright, and just as the morning mist is in the day of harvest. Just as in the whole day nothing is brighter than midday, when the sun shines from the middle of the sky, and equally illuminates the whole world, and just as in the heat and hot air, when the naked harvester is scorched, and the magnitude of the labor tests his breath, the temperate dew is most pleasing, if the morning moisture makes the dry stalks cuttable: in the same way, my speech, which I will consider in my place, will come gratefully to all who believe in me.

[AD 420] Jerome on Isaiah 18:4-7
(Vs. 4 and following) Because this is what the Lord says to me, I will rest and observe in my place: just as the bright midday light is, and like the clouds of dew in the day of harvest. Before the harvest, the whole field has blossomed, and the immature perfection will sprout, and its branches will be cut off by the sickle: and what has been left behind will be cut off, shaken off. And they will be left to the birds of the mountains, and to the animals of the earth, and in perpetual summer, birds will be above it, and all the animals of the earth will winter over it. In that time the gift of the Lord of hosts will be brought by the scattered and torn people, by the dreadful and desecrated people, by the waiting and trampled people, whose rivers they have plundered, to the place of the name of the Lord of hosts, Mount Zion. God rests and contemplates in His place, or near the Eagle, in the firmament, that is, in the Church, of which the Apostle Paul speaks: Pillar and foundation of truth (I Tim. III, 15). But the things that happen in the Church are contemplated; and just as the clear midday light illuminates everything, so it surveys the whole: according to what is said in the eighteenth Psalm in the mystical sense about the sun of justice: There is none that can hide himself from its heat. And just as the clouds of dew in the day of harvest, and in the scorching heat of summer are most welcome, so the Lord refreshes the inhabitants of His Church, in whose presence all things flourish. And before the time of consummation comes, because now we know in part and we prophesy in part, many perfect ones will be found, of whom the Apostle speaks: As many as are perfect, let us think this way (I Cor. XIII; Phil. III, 15). But the useless branches will be cut off by the sickles, as the Savior says in the Gospel: I am the true vine, and my Father is the vinedresser. Every branch in me that does not bear fruit, he will take it away; and every branch that bears fruit, he will prune it, that it may bear more fruit (John XV, 2). And those things which have been cut off will be left for the birds of the mountains and the beasts of the earth. For the birds, which are sown along the way, will be preyed upon, and for the beasts, to whom the soul is delivered, not confessing God, so that he who has been cut off and rejected by the Lord, and separated from his body, which is the Church, may find his dwelling among birds and beasts both in summer and winter, that is, in prosperity and adversity. And just as those who are useless and unfruitful in the Church are pruned and cast out, lest a little yeast corrupt the whole mass: so, on the contrary, it can happen that those who were deceived by heretical error, and torn away from the Lord and lacerated, and terrifying for their blasphemy, and waiting in vain for lies, and trampled by demons, and scattered in various parts by rivers, when they have remembered their God, and have abandoned their many teachers, offer a gift to the Lord of hosts, nowhere else but on Mount Zion, and in the watchtower, which is interpreted as the Church. We will be brief, because we have already discussed many things in the book of historical explanation.

[AD 420] Jerome on Isaiah 18:5-6
(Verse 5, 6.) For before the harvest it had flowered entirely, and immature perfection had sprouted, and its small branches will be cut with sickles, and whatever has been left behind will be cut off and shaken off. And they will be left with the birds of the mountains and the animals of the earth, and they will have perpetual summer over them, and all the animals of the earth will winter upon it. Because he had said of the south wind, and had sent a cloud of dew before summer and harvest, and had taken produce from the field, he will preserve it in the remains, describing the pride of Egypt and the devastation of its people, and the corpses throughout the province, which will be devoured by the birds. For just as the crops that spring up before maturity quickly perish, and the sprouts that germinate are useless before the proper time of growth comes; so, he says, the Egyptian people are cut down like useless branches with the sickle, and all their offspring will be stripped bare. And lest you think that he is speaking of the vineyard and not of men, he turns the metaphor into historical truth: And they shall be abandoned together to the birds of the mountains and to the beasts of the earth. For birds and beasts do not eat the severed branches of trees, but rather devour corpses. Let us read more fully Ezekiel, where he prophesies against Pharaoh and against Egypt: and all these things we will find written very clearly (Ezek. XXIX). And he says: In perpetual summer, birds shall be above him, and all beasts shall winter upon him; either this signifies a multitude of those who will be slain, or by the same interpretation it shows that he will be laid waste by all nations.

[AD 420] Jerome on Isaiah 18:7
(Verse 7) In that time the gift of the Lord of hosts will be brought by the scattered and torn people, by the terrifying people, after whom there was no other: by the waiting people, waiting and trampled, whose rivers they have plundered, to the place of the name of the Lord of hosts, the mountain of Zion. After the devastation of Egypt and the destruction of its empire, Israel will no longer trust in the vanity of its shadow, but will return to the Lord and bring its gifts to the mountain of Zion, that is, to His temple, and only pray to Him whose true and eternal protection it is. But this was done under Zerubbabel, and Joshua, and Ezra, and Nehemiah. LXX, because we have said: expecting, expecting, and in Hebrew it is written, hoping, hoping, on the contrary they are interpreted as ἀνέλπιστον, that is, not hoping. And for this reason Eusebius gave occasion for understanding this more about the Gentiles, who have neither hope, nor the Testament of God, nor the Prophets, than about the Jews: because gifts are to be sent afterwards by the Church itself, which is established on the watchtower, and spiritual offerings are to be made.