Ezra 6:7

Ezra, the priest of God, restored the law, which had been burned by the Chaldeans in the archives of the temple. For indeed he was full of the same spirit with which the Scriptures had previously been filled. [De Mirabilibus Sacrae Scripturae, 2.33]

And this was nothing wonderful for God to do, who, in the captivity of the people under Nebuchadnezzar, when the Scriptures had been destroyed, and the Jews had returned to their own country after seventy years, afterwards, in the time of Artaxerxes, king of the Persians, inspired Ezra the priest, of the tribe of Levi, to relate all the words of the former prophets, and to restore to the people the legislation of Moses. [quoting Irenaeus] Such are the words of Irenaeus.

If (Noah) had not had this (conservative power) by so short a route, there would (still) be this (consideration) to warrant our assertion of (the genuineness of) this Scripture: he could equally have renewed it, under the Spirit's inspiration, after it had been destroyed by the violence of the deluge, as, after the destruction of Jerusalem by the Babylonian storming of it, every document of the Jewish literature is generally agreed to have been restored through Ezra.

We must certainly understand by this day the time of the composition of the history, whether you prefer the view that Moses was the author of the Pentateuch or that Ezra re-edited it. In either case I make no objection. The question now is whether the words unto this day are to be referred to the time of publishing or writing the books, and if so it is for him to show, now that so many years have rolled away since that day, that either the idols hidden beneath the oak have been found, or the grave of Moses discovered; for he obstinately maintains that what does not happen so long as the point of time indicated by until and unto has not been attained, begins to be when that point has been reached.

And there was nothing astonishing in God having done this,-He who, when, during the captivity of the people under Nebuchadnezzar, the Scriptures had been corrupted, and when, after seventy years, the Jews had returned to their own land, then, in the times of Artaxerxes king of the Persians, inspired Esdras the priest, of the tribe of Levi, to recast all the words of the former prophets, and to re-establish with the people the Mosaic legislation.