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1 Josiah was eight years old when he began to reign, and he reigned thirty and one years in Jerusalem. And his mother's name was Jedidah, the daughter of Adaiah of Boscath. 2 And he did that which was right in the sight of the LORD, and walked in all the way of David his father, and turned not aside to the right hand or to the left. 3 And it came to pass in the eighteenth year of king Josiah, that the king sent Shaphan the son of Azaliah, the son of Meshullam, the scribe, to the house of the LORD, saying, 4 Go up to Hilkiah the high priest, that he may sum the silver which is brought into the house of the LORD, which the keepers of the door have gathered of the people: 5 And let them deliver it into the hand of the doers of the work, that have the oversight of the house of the LORD: and let them give it to the doers of the work which is in the house of the LORD, to repair the breaches of the house, 6 Unto carpenters, and builders, and masons, and to buy timber and hewn stone to repair the house. 7 Howbeit there was no reckoning made with them of the money that was delivered into their hand, because they dealt faithfully. 8 And Hilkiah the high priest said unto Shaphan the scribe, I have found the book of the law in the house of the LORD. And Hilkiah gave the book to Shaphan, and he read it. 9 And Shaphan the scribe came to the king, and brought the king word again, and said, Thy servants have gathered the money that was found in the house, and have delivered it into the hand of them that do the work, that have the oversight of the house of the LORD. 10 And Shaphan the scribe shewed the king, saying, Hilkiah the priest hath delivered me a book. And Shaphan read it before the king. 11 And it came to pass, when the king had heard the words of the book of the law, that he rent his clothes. 12 And the king commanded Hilkiah the priest, and Ahikam the son of Shaphan, and Achbor the son of Michaiah, and Shaphan the scribe, and Asahiah a servant of the king's, saying, 13 Go ye, inquire of the LORD for me, and for the people, and for all Judah, concerning the words of this book that is found: for great is the wrath of the LORD that is kindled against us, because our fathers have not hearkened unto the words of this book, to do according unto all that which is written concerning us. 14 So Hilkiah the priest, and Ahikam, and Achbor, and Shaphan, and Asahiah, went unto Huldah the prophetess, the wife of Shallum the son of Tikvah, the son of Harhas, keeper of the wardrobe; (now she dwelt in Jerusalem in the college;) and they communed with her. 15 And she said unto them, Thus saith the LORD God of Israel, Tell the man that sent you to me, 16 Thus saith the LORD, Behold, I will bring evil upon this place, and upon the inhabitants thereof, even all the words of the book which the king of Judah hath read: 17 Because they have forsaken me, and have burned incense unto other gods, that they might provoke me to anger with all the works of their hands; therefore my wrath shall be kindled against this place, and shall not be quenched. 18 But to the king of Judah which sent you to inquire of the LORD, thus shall ye say to him, Thus saith the LORD God of Israel, As touching the words which thou hast heard; 19 Because thine heart was tender, and thou hast humbled thyself before the LORD, when thou heardest what I spake against this place, and against the inhabitants thereof, that they should become a desolation and a curse, and hast rent thy clothes, and wept before me; I also have heard thee, saith the LORD. 20 Behold therefore, I will gather thee unto thy fathers, and thou shalt be gathered into thy grave in peace; and thine eyes shall not see all the evil which I will bring upon this place. And they brought the king word again.
[AD 373] Ephrem the Syrian on 2 Kings 22:1-7
“Josiah was eight years old when he began to reign; and he did what was right in the sight of the Lord” for the thirty-one years in which he reigned. In the eighteenth year from the beginning of his rule, he began to purify Judah and the inhabitants of Jerusalem. In fact, he removed the foreign religions introduced by Manasseh and overturned the sanctuaries and altars. In the same eighteenth year he ordered an expiation of the temple and commanded the priests to make repairs. He brought in workers, gathered stones, materials and other things useful to building and supplied the money for the expected expenses, and in this case he religiously emulated the pious zeal of his great-grandfather Jehoash. And at that time the refurbishment of the temple was not less necessary than it had been before, because for the fifty years in which Manasseh had reigned, it had been neglected or given to profane uses.

[AD 850] Ishodad of Merv on 2 Kings 22:8-10
The book that was discovered was the Deuteronomy that Moses had placed in the ark as a precaution. It was brought out through a divine action, in order to show the people that it cried and argued against them because of their great iniquity and therefore did not want to stay in its place. Hilkiah, who found the book, was the father of the prophet Jeremiah. It is not without a reason that the book was discovered at the time of Josiah because he, more than all the other kings, showed a real fervor against the priests of Baal, especially against those of the ten tribes, that is, those that had survived among them. Indeed, if [the book] had been found at the time of the other kings, they would not have accepted it. They might have even torn it up, as Zedekiah tore the prophecy of Jeremiah and threw it into the fire. [Another reason] is that the time of their captivity had come. For the seventy years of the Babylonian captivity are usually counted from the eighteenth year of Josiah, the year in which the book was discovered: as if the captivity was about to come in those days but was hindered because of Josiah’s virtue.

[AD 1781] Richard Challoner on 2 Kings 22:8
The book of the law: That is, Deuteronomy.
[AD 420] Jerome on 2 Kings 22:11-14
We need not wonder that Huldah, the prophet and wife of Shallum, was consulted by Josiah, king of Judah, when the captivity was approaching and the wrath of the Lord was falling on Jerusalem: since it is the rule of Scripture, when holy men fail, to praise women to the reproach of men.

[AD 850] Ishodad of Merv on 2 Kings 22:11-14
“They went to the prophet Huldah,” and not to Jeremiah, even though he was already well known as a prophet, probably because Jeremiah was not there at the moment, or maybe because this woman surpassed him with the power of her gift of prophecy.

[AD 735] Bede on 2 Kings 22:14
"She who dwells in Jerusalem in the second district." [2 Kings 22:14] What is said about Huldah the prophetess: "She who dwells in Jerusalem in the second district"; what this means is explained in the book of Chronicles, where it is written about the aforesaid King Hezekiah: "He also built, with great earnestness, all the wall that had been broken down, and reared up towers on it, and another wall outside" (2 Chron. 32). Zephaniah mentions this place, saying: "A voice of crying from the Fish Gate, and a wailing from the Second Quarter" (Zeph. 1). For which the old edition translated it as a proper name of the place, in Masena. Masena indeed means Second Quarter. Therefore, what is said about the prophetess dwelling in the Second, understand it as part of the second wall.

[AD 1781] Richard Challoner on 2 Kings 22:14
The Second: A street, or part of the city, so called; in Hebrew, Massem.
[AD 430] Augustine of Hippo on 2 Kings 22:18-20
How do we say that they have been advised who have died before the coming of the evils that followed their death, if after death they perceive whatever misfortunes befall the human life? Or is it that we are mistaken when we imagine that they are at rest when the restless life of the living concerns them? What is this, then, that God promised to the most devout king, Josiah, for a great reward, telling him that he would soon die in order that he might not see the evils that he was threatening to send on that place and that people? The words of God are these: “Thus says the Lord the God of Israel: My words, which you have heard and which you feared from my mouth when you heard what I said about this place and those who dwell in it, that it be forsaken and become a curse, and you rent your garments and wept in my sight, shall not come to pass, says the Lord of hosts. Behold I shall bring you to your fathers, and you shall be brought with peace, and your eyes shall not see all the evils that I bring upon this place and those who dwell in it.” And Josiah, alarmed at the dire threats of God, wept and tore his garments and then was made secure by an early death from all future ills, because he would so rest in peace that he would not see those evils. The souls of the dead, then, are in a place where they do not see the things that go on and transpire in this mortal life. How, then, do they see their own graves or their own bodies, whether they are buried or lie exposed? How do they take part in the misery of the living, when either they are suffering their own evil deserts, if such they have merited, or they rest in peace, such as was promised to this Josiah? For there they undergo no evils either by enduring them themselves or by compassionate suffering for others, but they are liberated from all evils that when they lived here they endured for themselves and out of compassion for others.