The interpretation timeline
Ephesians 1:12 Douay-Rheims

That we may be unto the praise of his glory, we who before hoped Christ:

A.D. 220 – 1871 6 witnesses

Patristic

before A.D. 750
220
A.D.
Tertullian Patristic
c. A.D. 150–220
“But then how can opposites be gathered together into him by whom they are in short destroyed? Again, what Christ do the following words announce, when the apostle says: "That we should be to the praise of His glory, who first trusted in Christ? " Now who could have first trusted-i.e. previously trusted -in God, before His advent, except the Jews to whom Christ was previously announced, from the beginning? He who was thus foretold, was also foretrusted.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"To the end that we should be unto the praise of His glory, we who had before hoped in Christ. In whom ye also having heard the word of the truth, the Gospel of your salvation." That is to say, through whom. Observe how he on all occasions speaks of Christ, as the Author of all things, and in no case gives Him the title of a subordinate agent, or a minister. And so again, elsewhere, in his Epistle to the Hebrews, he says, "that God, having of old time spoken unto the Fathers in the prophets, hath at the end of these days spoken unto us in His Son," (Heb. I: I.) that is "through" His Son. "The word of truth," he says, no longer that of the type, nor of the image. "The Gospel of your salvation." And well does he call it the Gospel of salvation, intimating in the one word a contrast to the law, in the other, a contrast with punishment to come. For what is the message, but the Gospel of salvation, which forbears to destroy those that are worthy of destruction.”
Source

Scholastic

c. 1100 – 1500
1273
A.D.
Thomas Aquinas Catholic
1225–1274
“Above, the Apostle set forth the abundance of grace which he himself and the other apostles received from Christ. But lest anyone should believe that they had received it by their own merits, he therefore consequently shows that they received it freely, called by God not by their own merits. Now this part is divided into three: for first he sets forth the gratuitous calling; second, the voluntary predestination of God, at the place "predestined according to his purpose," etc.; third, the end of both, at the place "that we should be unto the praise of his glory," etc. He says therefore: I said that grace of this kind superabounded in us, and that in Christ all things were restored. "In whom also," that is, through whom — Christ — "we have been called by lot," that is, not by our own merits, but by divine election. Colossians 1:12: "giving thanks to God and the Father, who has made us worthy to share in the lot of the saints in light," etc. Psalm 30:16: "In your hands are my lots." Now for the understanding of this, it must be known that many things happen among men which seem fortuitous and contingent, and yet are ordered according to divine providence. A lot is nothing other than an inquiry into the divine providence concerning some contingent and human matter. Whence Augustine, commenting on that verse of Psalm 30:16, "in your hands are my lots," says that a lot is not something evil, but in doubtful matters it seeks out the divine will. Now there is a threefold sin to be avoided in the casting of lots. First indeed, the sin of superstition; for every vain and unlawful religious observance is superstition. The sin of unlawful superstition is therefore incurred in lots when in them some pact is entered into with demons. Whence it is said in Ezekiel 21:21: "The king of Babylon stood at the parting of the way, at the head of two ways, seeking divination, mingling arrows. He questioned the idols, he consulted the entrails." For to mingle arrows pertains to divination by lot, and to question idols pertains to superstition; and there divination by lot is condemned among the sins pertaining to superstition. Second, the sin of tempting God is to be avoided. For as long as a man is able by himself to do something and to know what he ought to do, if he then seeks by lot from God, or in some other such manner, what he ought to do, he tempts God. But when necessity presses, and he himself cannot be helped by himself, then he lawfully inquires of God what he ought to do. 2 Chronicles 20:12: "since we do not know what we ought to do, this only remains to us, that we direct our eyes to you." Third, the sin of vanity is to be avoided, which occurs if we inquire about things useless and not pertaining to us, as for instance about future contingent things. Whence it is said in Acts 1:7: "It is not for you to know the times or the moments, which the Father has placed in his own power." According to this, therefore, a lot can be taken as threefold, namely a certain divisory kind, a certain consultory kind, and a certain divinatory kind. The divisory kind is when some, dividing an inheritance and unable to agree, cast lots — showing, for instance, a ring, or a piece of paper, or something of the sort — saying: whoever it falls to, he shall have this portion in the inheritance. And lots of this kind can be cast lawfully. Proverbs 18:18: "The lot suppresses contradictions, and it decides also among the powerful," that is, among those wishing to divide. The consultory kind occurs when someone, doubting what he ought to do, consults God, casting lots. It is said in Jonah 1:7 that when that storm came upon the sea, they consulted God, casting a lot, so that they might know by whose sin that storm had come. And this manner is lawful, especially in cases of necessity and in the elections of secular powers. Whence they make little rolls of wax, in some of which they place certain papers and in some not, which they call "bussuli," so that those to whom the bussuli with the papers come may have votes in the election. But this, before the coming of the Holy Spirit, the apostles did even in a spiritual election, Acts 1:26, when the lot fell upon Matthias; but this, after the coming of the Holy Spirit, is no longer lawful in the aforesaid elections, because in doing this one would do injury to the Holy Spirit. For it must be believed that the Holy Spirit provides good pastors for his Church. Whence, after the coming of the Holy Spirit, when the apostles elected the seven deacons, they did not cast lots; and therefore in no ecclesiastical election is it lawful in this manner. The divinatory lot, however, is an inquiry concerning future things reserved to divine knowledge alone. And this always has vanity mixed in, nor can it occur without the vice of curiosity. Since, therefore, a lot is nothing other than an inquiry into things which happen from the divine will, and grace depends on the divine will alone, hence it is that the grace of divine election is called a lot, because God, in the manner of a lot, according to hidden providence, not from anyone's merits, calls through interior grace. Then, when he says "predestined," etc., he sets forth the voluntary predestination of God, concerning which it is said in Romans 8:30: "whom he predestined, these he also called." The reason indeed for this predestination is not our merits, but the mere will of God; on account of which he adds "according to his purpose." Romans 8:28: "We know that for those who love God, all things work together unto good, for those who according to his purpose are called saints." Now that he predestined according to his purpose, he proves, because not only this, but also all the other things which God does, he works according to the counsel of his will. Psalm 134:6: "Whatever things the Lord willed, he has done." Isaiah 46:10: "My counsel shall stand, and all my will shall be done." But he does not say "according to will," lest you should believe that it is irrational, but "according to the counsel of his will" — that is, according to his will which is from reason; not according as reason implies discursive reasoning, but according as it designates a certain and deliberate will. Lastly, he touches on the end of both, namely of predestination and of calling, namely the praise of God. Whence he says "that we should be unto the praise of his glory, we who before hoped in Christ," and through us, who believe in Christ, the glory of God is praised. Isaiah 55:12: "the mountains and the hills shall sing praise before God." Now the praise of the glory of God, as Ambrose says, is when many are gained to the faith, just as the glory of a physician is when he gains and cures many. Ecclesiasticus 2:9: "You who fear the Lord, hope in him, and in delight mercy will come to you."”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“That we should be to the praise of his glory,.... This is the end of predestination to the inheritance; and the sense is, either that the praise of the glory of God, in his grace and goodness, might be discovered and made known unto the saints, as it is displayed in election, redemption, justification, pardon, adoption, regeneration, and eternal salvation; or that they should praise and glorify him on account of these things, by ascribing all to his grace, and nothing to themselves; by giving him thanks for all his benefits; by ordering their conversations aright as become the Gospel; and by doing all things with a view to his glory: who first trusted in Christ; the Jews, the apostle, and others of the Jewish nation; who before hoped in Christ, as the words may be rendered; who hoped in Christ before the Gentiles did; and indeed the people of Israel hoped for Christ before he came; the promises of the Messiah were made to them, and he was the peculiar hope and expectation of that people; and to them he first came, and to them the Gospel was first preached; and some of them first believed in Christ, and trusted in him, and not in their own righteousness, strength, wisdom, and riches, nor in their own hearts, nor in any mere creature, nor in their carnal privileges; all which they renounced confidence in, and dependence on, when they came to the knowledge of Christ; in whose person they trusted for acceptance, and in his righteousness for justification, and in his blood for pardon, and in his fulness for supply, and in his power for protection and perseverance: this supposes knowledge of him, and a sense of the frailty and vanity of all other objects; and was a betaking themselves to him, a leaning and staying on him, a committing all unto him, and an expectation of all good things from him.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“That we - Jews, now apostles and messengers of God, to whom the first offers of salvation were made, and who were the first that believed in Christ. Should be to the praise of his glory - By being the means of preaching Christ crucified to the Gentiles, and spreading the Gospel throughout the world.”
1871
A.D.
1871
“(Eph 1:6, Eph 1:14). who first trusted in Christ--rather (we Jewish Christians), "who have before hoped in the Christ": who before the Christ came, looked forward to His coming, waiting for the consolation of Israel. Compare Act 26:6-7, "I am judged for the hope of the promise made of God unto our fathers: unto which our twelve tribes, instantly serving God day and night, hope to come." Act 28:20, "the hope of Israel" [ALFORD]. Compare Eph 1:18; Eph 2:12; Eph 4:4.”
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.