The interpretation timeline
Genesis 41:46 Douay-Rheims

(Now he was thirty years old when he stood before king Pharao) and he went round all the countries of Egypt.

A.D. 407 – 1875 6 witnesses

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“Far from idly considering that there is merely reference here to his age, let us learn that there is no excuse for anyone to neglect virtue or any grounds for claiming the pretext of youth when virtue needs to be demonstrated. See, after all, this man: he was not only young but also charming in appearance and handsome to behold. It is possible, you see, for a young man not to be blessed with bodily charm. But in addition to his youth this man was also charming in appearance and good looking. Joseph was near the bloom of youth when he was captured and became a slave. He was in fact, the text says, seventeen when he was carried off into Egypt. Then he was in the burning heat of youth when the wanton Egyptian, who happened to be his employer, set upon him without overcoming the good man's resistance. Then came prison and his hardship there for such a long period of time; he remained firm as iron, not only not becoming less resistant but even gaining greater strength. Joseph had grace from on high, you see, to strengthen him. Since he had previously given evidence of every virtue from his own resources, accordingly he was summoned from prison to take charge of all of Egypt.After hearing this, let us never despair in the midst of distress or become frustrated by following our own reasoning. Rather, let us give evidence of sound endurance and be buoyed up by hope, secure in the knowledge of our Lord's resourcefulness and the fact that instead of ignoring us and abandoning us to the experience of troubles, he wants to crown us with a resplendent garland for our struggles. It is for this that all holy people have been distinguished. Hence the apostles also said, "It is through great distress that we must enter the kingdom of God." Christ himself said to the disciples, "In the world you will have distress." So let us not be upset at the thought of distress but rather listen to Paul's statement that "those who wish to live religiously in Christ Jesus will suffer persecution." Far from being surprised or troubled, let us endure developments with complete fortitude and endurance, having regard not to the distress but to the gain accruing to us from it. This transaction, you see, is spiritual. And just as people intent on making money and being involved in a transaction of this life would succeed in increasing their wealth in no other way than by being exposed to great danger on land and at sea (they must, after all, put up with the onset of brigands and wiles of pirates), and yet they are ready to accept every thing with great enthusiasm, having no sense of hardship through the expectation of gain, in just the same way must we keep our mind on the wealth and spiritual riches accruing to us from this. We must rejoice and be glad, considering not what can be seen but what cannot be seen, as Paul's exhortation goes, "not considering what can be seen."4 This in fact is what faith is, when we do not rely on our bodily eyes alone but imagine with the eyes of the mind things that are not visible. In particular, you see, we ought to consider the things that are not visible as more reliable than the things seen with bodily eyes. In this way the patriarch Abraham won his good name, by believing God's promise and proving superior to nature and human reasoning. Hence "it was reckoned as righteousness in him." Call to mind that righteousness consists in believing what is said by God. I mean, whenever he promises something, don't look for things according to human logic, I ask you, but prove superior to such reasoning and trust in the power of the one making the promise. This was the way each of the good people won their name. This too was the way the remarkable man Joseph, despite the great number of difficulties confronting him after his dream, resisted panic and trepidation and instead nobly bore everything with resolute determination, secure in the knowledge that what God had decided could not fail. Hence, despite enslavement, despite imprisonment and such terrible calumny, he was granted control over the whole of Egypt.”
Source

Post-Reformation

c. 1650 – 1900
1714
A.D.
Matthew Henry Reformed
1662–1714
“Observe here, I. The building of Joseph's family in the birth of two sons, Manasseh and Ephraim, Gen 41:50-52. In the names he gave them, he owned the divine Providence giving this happy turn to his affairs, 1. He was made to forget his misery, Job 11:16. We should bear our afflictions when they are present as those that know not but Providence may so outweigh them by after-comforts as that we may even forget them when they are past. But could he be so unnatural as to forget all his father's house? He means the unkindness he received from his brethren, or perhaps the wealth and honour he expected from his father, with the birthright. The robes he now wore made him forget the coat of divers colours which he wore in his father's house. 2. He was made fruitful in the land of his affliction. It had been the land of his affliction, and in some sense it was still so, for it was not Canaan, the land of promise. His distance from his father was still his affliction. Note, Light is sometimes sown for the righteous in a barren and unlikely soil; and yet if God sow it, and water it, it will come up again. The afflictions of the saints promote their fruitfulness. Ephraim signifies fruitfulness, and Manasseh forgetfulness, for these two often go together; when Jeshurun waxed fat, he forgot God his Maker. II. The accomplishment of Joseph's predictions. Pharaoh had great confidence in the truth of them, perhaps finding in his own mind, beyond what another person could, an exact correspondence between them and his dreams, as between the key and the lock; and the event showed that he was not deceived. The seven plenteous years came (Gen 41:47), and, at length, they were ended, Gen 41:53. Note, We ought to foresee the approaching period of the days both of our prosperity and of our opportunity, and therefore must not be secure in the enjoyment of our prosperity nor slothful in the improvement of our opportunity; years of plenty will end, therefore, Whatever thy hand finds to do do it; and gather in gathering time. The morning cometh and also the night (Isa 21:12), the plenty and also the famine. The seven years of dearth began to come, Gen 41:54. See what changes of condition we are liable to in this world, and what need we have to be joyful in a day of prosperity and in a day of adversity to consider, Ecc 7:14. This famine, it seems, was not only in Egypt, but in other lands, in all lands, that is, all the neighbouring countries; fruitful lands are soon turned into barrenness for the iniquity of those that dwell therein, Psa 107:34. It is here said that in the land of Egypt there was bread, meaning probably, not only that which Joseph had bought up for the king, but that which private persons, by his example, and upon the public notice of this prediction, as well as by the rules of common prudence, had laid up. III. The performance of Joseph's trust. He was found faithful to it, as a steward ought to be. 1. He was diligent in laying up, while the plenty lasted, Gen 41:48, Gen 41:49. He that thus gathers is a wise son. 2. He was prudent and careful in giving out, when the famine came, and kept the markets low by furnishing them at reasonable rates out of his stores. The people in distress cried to Pharaoh, as that woman to the king of Israel (Kg2 6:26), Help, my lord, O king: he sent them to his treasurer, Go to Joseph. Thus God in the gospel directs those that apply to him for mercy and grace to go to the Lord Jesus, in whom all fulness dwells; and, What he saith to you, do. Joseph, no doubt, with wisdom and justice fixed the price of the corn he sold, so that Pharaoh, whose money had bought it up, might have a reasonable profit, and yet the country might not be oppressed, nor advantage taken of their prevailing necessity; while he that withholdest corn when it is dear, in hopes it will yet grow dearer, though people perish for want of it, has many a curse for so doing (and it is not a curse causeless), blessings shall be upon the head of him that thus selleth it, Pro 11:26. And let the price be determined by that golden rule of justice, to do as we would be done by.”
Source
1771
A.D.
John Gill Reformed
1697–1771
“And unto Joseph were born two sons,.... The word for "born" is singular; hence Ben Melech conjectures that they were twins: and this was before the years of famine came; or "the year of famine" (q); the first year: which Asenath, the daughter of Potipherah priest of On, bare unto him; which is observed, to show that he had them by his lawful wife; whom the Targum of Jonathan wrongly again makes the daughter of Dinah, and her father prince of Tanis, the same with Zoan; whereas this was "On" or "Heliopolis", a very different place; so Artapanus says (r), that Joseph married the daughter of the priest of Heliopolis, by whom he had children; and another Heathen writer (s) mentions their names, Ephraim and Manesseh. (q) "annus famis", Tigurine version, Pagninus, Montanus, Drusius; "annus (primus) famis", Schmidt. (r) Apud Euseb. Praepar. Evangel. l. 9. c. 23. p. 429. (s) Polyhistor. apud ib. p. 424.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Joseph was thirty years old - As he was seventeen years old when he was sold into Egypt, Gen 37:2, and was now thirty, he must have been thirteen years in slavery. Stood before Pharaoh - This phrase always means admission to the immediate presence of the sovereign, and having the honor of his most unlimited confidence. Among the Asiatic princes, the privilege of coming even to their seat, of standing before them, etc., was granted only to the highest favorites.”
Source
1871
A.D.
1871
“Joseph was thirty years old when he stood before Pharaoh--seventeen when brought into Egypt, probably three in prison, and thirteen in the service of Potiphar. went out . . . all the land--made an immediate survey to determine the site and size of the storehouses required for the different quarters of the country.”
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“Joseph was 30 years old when he stood before Pharaoh, and went out from him and passed through all the land of Egypt, i.e., when he took possession of his office; consequently he had been in Egypt for 13 years as a slave, and at least three years in prison.”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.