1 Woe to them that go down to Egypt for help; and stay on horses, and trust in chariots, because they are many; and in horsemen, because they are very strong; but they look not unto the Holy One of Israel, neither seek the LORD!
Let our course take us to regions above, because it is better to ascend. Finally, as was read today, “Woe to them that go down to Egypt.” Surely it is not wrong to go to Egypt, but to change to the ways of the Egyptians, to change to the violence of their treachery and to the ugliness of their wantonness—this is wrong. He that changes in this way descends, and one who descends falls. Let us keep away, then, from the Egyptian who is a man, but [let us] not [keep away] from God. Even the king of Egypt himself fell under the dominion of his own vices and in comparison with him Moses was accounted a god, ruling over kingdoms and subjecting powers to himself. So we read that it was said to Moses: “I shall make you a god to Pharaoh.”
(Chapter 31, verses 1 onwards) Woe to those who go down to Egypt for help, who rely on horses, who trust in the multitude of their chariots and in the great strength of their horsemen, but do not look to the Holy One of Israel, or seek help from the Lord. Yet he too is wise and can bring disaster; he does not take back his words. He will rise up against the wicked nation, against those who help evildoers. Egypt is a man and not a God: and their horses are flesh, not spirit: and the Lord shall lay his hand upon them that help, and the helper shall fall down, and he that is helped shall fall, and they shall all be consumed together. After the burden of the beasts of the south, and the treasures of their riches for the people of Egypt shall exhaust their aid, which shall be of no profit to them, but for a shame and a reproach. Look now towards the land of the north wherein is the king of Babylon: where is now the old king of Assyria? Where are their gods in whom they trusted? Who is the king of Hamath, and of Arphad, and of the city of Sepharvaim, of Ana, and of Ava? And as for Hamath it had the beginning from Samaria: but Samaria and Jerusalem shall receive the reward of their trusting in him. For their God is with them and they glory in their king. With their horses and chariots they shall go up, and with their horsemen and their troops they shall come down, and they shall cover the land as a sea. And they shall pass through it unharmed: and they shall fall into captivity. And they that shall be gathered together against them, shall be confounded: and all the beasts of the field, and all the fowls of the air, and the birds of the sea shall be gathered together upon them: and the Lord will for them carry on a war, and will afflict them. Their strength shall be consumed with famine: and their birds shall be devoured with a burning heat, and with most grievous destruction: because they have despised the words of the Lord, and have depised the counsel of the holy one of Israel. And this is both the present and the past, where it is prescribed that the Jews should not go down to Egypt; here, because they have despised the Lord's command, it is prophesied that they will go down, and that both Israel and the Egyptians, both the fugitives and the helpers, will be slain by King Nebuchadnezzar of Babylon. Jeremiah speaks at length about this (Jeremiah 42). Woe therefore to those who go down to Egypt and despise the Lord's command in fear of the Chaldeans, hoping in idolaters who boast of having the worship of God, and relying on the help of horses, not knowing the scripture: A deceitful horse brings salvation (Psalm 32:17); and they have confidence in chariots, horses, and riders, not remembering that song: He has cast chariots and their riders into the sea (Exodus 15:1). And they did not trust in the Holy One of Israel, who promised them help through Jeremiah for those who remained in the land of Judah. And they did not seek the Lord; not that they did not seek, but that they disregarded the words of the one they sought. And this is also said of the wicked priests: They devour my people and do not call upon the Lord (Psalm 52:5,6). But the wise one, that is, the Lord, brought evil upon them, and the worst, namely Nebuchadnezzar, or rather, he brought about evil as a consequence, not as a personal intention; and he did not take away his words that he had spoken through the prophets. How will it rise up against the tribe of Judah, the house of the wicked, and against the help of the Egyptians, who work iniquity? For Egypt, or the Egyptians as the Septuagint translated, is a man and not God; and their horses are flesh and not spirit. Therefore, it is written in Jeremiah: Cursed is the man who puts his trust in man and has made flesh his strength, and his heart has turned away from the Lord. And he will be like a shrub in the desert, and shall not see when good comes (Jeremiah 17:5-6). And in another place it is written: The salvation of man is in vain (Ps. 59:13), or, as is better understood in the Hebrew, in man. And when the Lord stretches out His hand to punish, or turns away, under the metaphor of a charioteer, and loosens the reins of the horses that are running, the Egyptian helper will fall, and the help that was given to Israel. Indeed, we can understand this about those who, in times of persecution, tribulation, and distress, do not trust in the Lord, but in the help of the Egyptians, that is, of worldly men; not knowing that Abraham was in danger in Egypt, and that the people of God served in that region of mud and bricks, which is spiritually called the iron furnace. Wherefore also in the Apocalypse of John it is read: The place in which the Lord was crucified is spiritually called Sodom and Egypt (Al. Egyptian) (Apoc. XI, 8).
[AD 397] Ambrose of Milan on Isaiah 31:1