(Chapter 20, verses 1 and following) In the year that Tartan came to Ashdod, when Sargon the king of Assyria sent him and he fought against Ashdod and took it, at that time the Lord spoke by Isaiah the son of Amoz, saying, "Go, and loose the sackcloth from your waist and take off your sandals from your feet," and he did so, walking naked and barefoot. And the Lord said, "As my servant Isaiah has walked naked and barefoot for three years, as a sign and a portent against Egypt and Cush. Thus the king of Assyria will threaten the captivity of Egypt, and the migration of Ethiopia, both the young and the old, naked and barefoot, with their buttocks uncovered, the shame of Egypt. And they will fear and be ashamed because of Ethiopia, and because of Egypt, their glory. And the inhabitants of this island will say on that day, Is this our hope? To whom did we flee for help, to be delivered from the face of the king of Assyria? And how can we escape? Pro Thartan LXX Thanatan transtulerunt: et pro Sargon, Arna: quod quid interpretetur, scire non possumus. Neque enim falsorum nominum falsas possumus etymologias fingere. Sunt autem nomina non Hebraea, sed Assyria, e quibus sonare cognovimus Thartan, turrem dedit, vel superfluus, sive elongans. Sargon autem princeps horti. Hic rex Assyrius quem supra legimus sensum magnum, habet duces plurimos, quorum unus est Thartan, elatus in superbiam, et longe procedens in scelere,et amplior caeteris: et mittitur ad impugnandam Azotum, quae Hebraice dicitur Asdod (), et interpretatur, ignis generationis; expugnatque dux regis Assyrii eos qui generationi et libidini serviunt. And beautifully the king of the Assyrians, Sargon the prince of gardens, is said to be dedicated to pleasure and luxury. Finally, even Ahab, the king of Israel, desired to turn Naboth's vineyard into a garden, understanding the figurative meaning according to the laws of tropology, he preferred to die rather than to do it, so that his paternal inheritance and ancient possession would not be turned into the delights of an impious king. Moreover, the prophet is commanded to walk naked and barefoot, with his sack and shoes removed, as a sign and wonder to the Egyptians and Ethiopians who persecuted the people of God, and to humble them because of their pride. For Egypt means pursuing or afflicting; the Ethiopians, are humble and dejected; for everyone who exalts himself will be humbled. (Luke 14:11). And those who are to be led into captivity and suffer torment for three years, as we read in the Psalms: I considered the days of old and years long past. (Psalm 77:5). These are not small punishments, but ones extended for long periods of time. But in the very captivity and transmigration in Egypt, both young and old, who have been strengthened in evil and have reached the vices of perfect age, will go naked so that all their crimes may be exposed (For nothing is hidden that will not be revealed), and barefoot, because they will not be able to eat the Pascha of the Lord: whoever eats it has his loins girded and holds a staff in his hand and stands with feet shod, so that while passing through the desert of this world he may not be bitten by serpents. Then their buttocks will be exposed, from which excrement is produced, and all the shame of Egypt will be revealed, so that those who had hope in Egypt and Ethiopia will be confounded, and they will see that their glory has been changed into confusion; to such an extent that the inhabitant of this island, that is, of this world, who is not a stranger and foreigner, but desired to have perpetual possession of the world, says in confusion: This is Egypt, and this is Ethiopia, from which we hoped for help, in order that they would free us from the prince of this world. How then can we escape, since those in whom we had hope are captured? And it should be noted that before Azotus is captured, he is clothed in a sackcloth and with feet shod, so that he may indeed bewail those who have been wounded by the burning darts of the devil and serve their lust; but nevertheless, he himself walks shod, so that he may tread upon serpents and scorpions, and walk securely through the wilderness of this world, in which there are serpents and scorpions, and a thirst for good things. But after Ashdod was captured, he walks barefoot and naked as a sign of the captivity of Egypt and the exile of Ethiopia. For he could not stand or walk in the holy land, to which he hurried to go, dressed in a sackcloth and with his feet covered with skins, as the Lord said: Remove the sandals from your feet, for the place you are standing on is holy (Exodus 3:5).
[AD 420] Jerome on Isaiah 20:1-6