The interpretation timeline
Ephesians 6:3 Douay-Rheims

That it may be well with thee, and thou mayest be long lived upon earth.

A.D. 258 – 1871 5 witnesses

Patristic

before A.D. 750
258
A.D.
Cyprian Patristic
c. A.D. 200–258
“That we must obey parents. In the Epistle of Paul to the Ephesians: "Children, be obedient to your parents: for this is right. Honour thy father and thy mother (which is the first command with promise), that it may be well with thee, and thou mayest be long-lived on the earth."”
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“As a man in forming a body, places the head first, after that the neck, then the feet, so does the blessed Paul proceed in his discourse. He has spoken of the husband, he has spoken of the wife, who is second in authority, he now goes on by gradual advances to the third rank-which is that of children. For the husband has authority over the wife, and the husband and the wife over the children. Here he has not a word of discourse concerning Christ, not a word on high subjects, for he is as yet addressing his discourse to tender understandings. And it is for this reason, moreover, that he makes his exhortation short, inasmuch as children cannot follow up a long argument. For this reason also he does not discourse at all about a kingdom, (because it does not belong to the tender age of childhood to understand these subjects,) but what a child's soul most especially longs to hear, that he says, namely, that it shall "live long." For if any one shall enquire why it is that he omitted to discourse concerning a kingdom, but set before them the commandment laid down in the law, he does this because he speaks to them as infantile, and because he is well aware that if the husband and the wife are thus disposed according to the law which he has laid down, there will be but little trouble in securing the submission of the children. For whenever any matter has a good and sound and orderly principle and foundation, everything will thenceforward go on with method and regularity, with much facility: the more difficult thing is to settle the foundation, to lay down a firm basis. "Children," saith he, "obey your parents in the Lord," that is, according to the Lord. This, he means to say, is what God commands you. But what then if they shall command foolish things? Generally a father, however foolish he may be himself, does not command foolish things. However, even in that case, the Apostle has guarded the matter, by saying, "in the Lord"; that is, wherever you will not be offending against God. So that if the father be a gentile or a heretic, we ought no longer to obey, because the command is not then, "in the Lord." But how is it that he says, "Which is the first commandment"? For the first is, "Thou shalt not commit adultery;-Thou shalt not kill." He does not speak of it then as first in rank, but in respect of the promise. For upon those others there is no reward annexed, as being enacted with reference to evil things, and to departure from evil things. Whereas in these others, where there is the practice of good, there is further a promise held out. And observe how admirable a foundation he has laid for the path of virtue, that is, honor and reverence towards parents. When he would lead us away from wicked practices, and is just about to enter upon virtuous ones, this is the first thing he enjoins, honor towards parents; inasmuch as they before all others are, after God, the authors of our being, so that it is reasonable they should be the first to reap the fruits of our right actions; and then all the rest of mankind. For if a man have not this honor for parents he will never be gentle toward those unconnected with him.”
Source

Scholastic

c. 1100 – 1500
1273
A.D.
Thomas Aquinas Catholic
1225–1274
“Above he admonished husband and wife, which is one bond of the family; here he admonishes father and children, which is the second bond of the household. And first he makes mention of how children ought to conduct themselves toward their parents; second, conversely, how fathers ought to conduct themselves toward their children, at the place "provoke not," etc. The first is divided into two parts. First he sets forth the admonition; second he shows the reason, at "for this is just," etc. He says therefore: "Children, obey," etc. It should be noted here that fathers ought naturally to instruct their children in morals, while children, when their parents are instructing them, ought naturally to obey them, just as the sick obey physicians. Hence obedience is proper to children. Colossians 3:20: "Children, obey" — namely, your parents — "in all things, for this is well-pleasing to the Lord," etc. But he says "in the Lord," because one is not to obey parents, nor anyone, in those things which are against God. Acts 5:29: "One must obey God rather than men." And by this the authority just now alleged is resolved: "If anyone comes to me and does not hate his father," etc.; for this is understood insofar as they are against God. But he assigns the reason from two things, namely from justice and from usefulness. That it is just, however, is evident and is proved, because the divine law commands nothing except what is just. Psalm 18:9: "the justices of the Lord," etc. But this the divine law commands. Exodus 20:12 and Deuteronomy 5:16: "Honor thy father and thy mother," etc. Ecclesiasticus 3:8: "He who fears God honors his father," etc. But honor implies the showing of reverence to those who are above us; but since we have parents above us, he uses the word "honor." He says therefore: "for this is just, honor thy father and mother," etc. Ecclesiasticus 3:7: "He who honors his father shall live a longer life, and he who obeys his father shall bring comfort to his mother." And this is understood in a threefold way, that children ought to honor their parents: because they owe them reverence as to their elders, obedience as to their instructors, and support as to those who nourished them, when they shall be strong. Then he assigns the dignity of this precept, saying that it is the first commandment. On the contrary: rather the first commandment is that the one God is to be worshipped. I respond: the commandments are contained on two tablets. The first contains those which are ordered toward God; the second, those which are ordered toward one's neighbor; and on this second tablet the first commandment is concerning the honor of parents. And this for a twofold reason. First, because on that second tablet there is no affirmative precept except this one, since it is natural to us that we should serve our parents, but not so toward other neighbors — therefore there is no other affirmative precept. But nature dictates that man should not inflict harm on his neighbors, and therefore that is forbidden. Since, then, the first has more and a prior claim of debt, therefore it is first. Second, because God is to be honored as the principle of our being, and because parents are also a principle of our being, and because, as is said in Ethics VI, we have three things from our parents, namely being, living, and upbringing — therefore it is fitting that, after the commandments ordered toward God, the first should be ordered toward parents. Or, it is first with respect to the promise, because to this one alone is a promise added. And of this there is a twofold reason. One is that men, in the other things which they do, seek their own advantage, and because from parents who are already old they expect no advantage, except that coming from God. The second reason is, lest anyone believe that the honoring of parents is not meritorious because it is natural — therefore he adds "that thou mayest be long-lived upon the earth." But in the Old Testament temporal promises were promised, because that people was a little one, and therefore was to be graciously instructed under a tutor, as a little one. Yet in those small gifts befitting that little people, great goods were prefigured, namely spiritual goods. And therefore this can be referred, according to the literal sense, to temporal goods. And thus he says in the promise, "that it may be well with thee," that is, that thou mayest abound in the promised goods. For he who is grateful in lesser benefits merits to receive greater ones; but the greatest benefits we have from our parents, namely being, nourishment, and upbringing. When, therefore, someone is grateful for these, he becomes worthy to receive greater things. And therefore he says "that it may be well with thee"; because, as is said in 1 Timothy 4:8: "godliness is useful for all things, having the promise of the life that now is, and of that which is to come." And therefore he adds "and that thou mayest be long-lived upon the earth," as it were upon the grace and benefit of life which thou hast from thy parents. Proverbs 3:16: "Length of days is in her right hand, and in her left hand riches and glory." But on the contrary: many who are devoted to their parents die quickly. And therefore it should be known that these temporal things are not goods absolutely, except insofar as they are ordered to spiritual things, and therefore they are good for man only insofar as he is helped by them toward spiritual things. Hence fortune is not to be called good, if it is an impediment to virtue. And therefore length of life is good only insofar as it is ordered to the service of God. And therefore it is sometimes taken away lest it be an impediment. Wisdom 4:11: "He was taken away, lest wickedness should alter his understanding." Or it can be referred to the spiritual sense, "that thou mayest be long-lived in the land of the living." Psalm 142:10-11: "Thy good spirit shall lead me into the right land; for thy name's sake, O Lord, thou wilt give me life." Consequently, the children having been instructed, the parents are instructed. Concerning this he does two things: first he sets down one prohibitive precept; second, another inductive one, at "but bring them up," etc. He says therefore: "And you, fathers, provoke not your children to wrath" — not that you should assent to their will in all things. Here it should be noted that the rule of a father over a son is different from that of a master over a slave, because a master makes use of his slave for his own advantage, but a father makes use of his son for the son's advantage. And therefore it is necessary that fathers instruct their children for the children's own advantage, yet not by restraining or subjecting them with threats. And therefore it is said in Colossians 3:21: "Fathers, provoke not your children to indignation," namely so that they do not become fainthearted, because such provocation does not encourage them to the good. How then? He adds: "but bring them up in discipline" — namely of blows — "and correction" — namely of words — that is, rebuke them and bring them up, that they may serve the Lord. Or: "in discipline," by leading them to the good, and "correction," by drawing them back from evils.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“That it may be well with thee,.... In this world, and that which is to come; see Deu 5:16. The Jews (z) say, "there are four things, which if a man does, he eats the fruit of them in this world, and the capital part remains for him in the world to come; and they are these, "honouring father and mother", doing acts of beneficence, making peace between a man and his neighbour, and learning of the law, which answers to them all.'' And thou mayest live long on the earth: length of days is in itself a blessing; and though men's days cannot be lengthened beyond God's purpose and decree; and though obedient children do not always live long; yet disobedience to parents often brings the judgments of God on children, so that they die not a common death, Sa2 18:14. On those words in Deu 32:47, the Jews (a) have this paraphrase; "because it is your life, , "this is honouring father and mother; and through this thing ye shall prolong your days", this is beneficence.'' It may be observed, that the words in this promissory part are not the same as in the decalogue, where they stand thus, "that thy days may be long upon the land which the Lord thy God giveth thee", Exo 20:12, referring to the land of Canaan; for the law in the form of it, in which it was delivered by Moses, only concerned the people of the Jews; wherefore to suit this law, and the promise of it, to others, the apostle alters the language of it. (z) Misna Peah, c. 1. sect. 1. T. Bab. Sabbat, fol. 127. 1, & Kiddushin, fol. 40. 1. (a) T. Hieros. Peah, fol. 15. 4.”
Source
1871
A.D.
1871
“long on the earth--In Exo 20:12, "long upon the land which the Lord thy God giveth thee," which Paul adapts to Gospel times, by taking away the local and limited reference peculiar to the Jews in Canaan. The godly are equally blessed in every land, as the Jews were in the land which God gave them. This promise is always fulfilled, either literally, or by the substitution of a higher blessing, namely, one spiritual and eternal (Job 5:26; Pro 10:27). The substance and essence of the law are eternally in force: its accidents alone (applying to Israel of old) are abolished (Rom 6:15).”
Source
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.