The interpretation timeline
Revelation 5:7 Douay-Rheims

And he came and took the book out of the right hand of him that sat on the throne.

A.D. 202 – 1871 6 witnesses

Patristic

before A.D. 750
202
A.D.
Irenaeus Patristic
c. A.D. 130–202
“Likewise does the Lord also say: "All things are delivered to Me by My Father;" manifestly by Him who made all things; for He did not deliver to Him the things of another, but His own. But in all things [it is implied that] nothing has been kept back [from Him], and for this reason the same person is the Judge of the living and the dead; "having the key of David: He shall Open, and no man shall shut: He shall shut, and no man shall open." For no one was able, either in heaven or in earth, or under the earth, to open the book of the Father, or to behold Him, with the exception of the Lamb who was slain, and who redeemed us with His own blood, receiving power over all things from the same God who made all things by the Word, and adorned them by [His] Wisdom, when "the Word was made flesh;" that even as the Word of God had the sovereignty in the heavens, so also might He have the sovereignty in earth, inasmuch as [He was] a righteous man, "who did no sin, neither was there found guile in His mouth;" and that He might have the pre-eminence over those things which are under the earth, He Himself being made "the first-begotten of the dead;" and that all things, as I have already said, might behold their King; and that the paternal light might meet with and rest upon the flesh of our Lord, and come to us from His resplendent flesh, and that thus man might attain to immortality, having been invested with the paternal light.”
Source
303
A.D.
c. A.D. 250–303
“"Lo, the Lion of the tribe of Judah, the root of David, hath prevailed." We read in Genesis that this lion of the tribe of Judah hath conquered, when the patriarch Jacob says, "Judah, thy brethren shall praise thee; thou hast lain down and slept, and hast risen up again as a lion, and as a lion's whelp." For He is called a lion for the overcoming of death; but for the suffering for men He was led as a lamb to the slaughter. But because He overcame death, and anticipated the duty of the executioner, He was called as it were slain. He therefore opens and seals again the testament, which He Himself had sealed. The legislator Moses intimating this, that it behoved Him to be sealed and concealed, even to the advent of His passion, veiled his face, and so spoke to the people; showing that the words of his announcement were veiled even to the advent of His time. For he himself, when he had read to the people, having taken the wool purpled with the blood of the calf, with water sprinkled the whole people, saying, "This is the blood of His testament who hath purified you." It should therefore be observed that the Man is accurately announced, and that all things combine into one. For it is not sufficient that that law is spoken of, but it is named as a testament. For no law is called a testament, nor is any thing else called a testament, save what persons make who are about to die. And whatever is within the testament is sealed, even to the day of the testator's death. Therefore it is with reason that it is only sealed by the Lamb slain, who, as it were a lion, has broken death in pieces, and has fulfilled what had been foretold; and has delivered man, that is, the flesh, from death, and has received as a possession the substance of the dying person, that is, of the human members; that as by one body all men had fallen under the obligation of its death, also by one body all believers should be born again unto life, and rise again. Reasonably, therefore, His face is opened and unveiled to Moses; and therefore He is called Apocalypse, Revelation. For now His book is unsealed-now the offered victims are perceived-now the fabrication of the priestly chrism; moreover the testimonies are openly understood.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And he came,.... He drew nigh to the throne of God, he engaged his heart to approach unto him, and came up even to his seat, which a mere creature, without a Mediator, cannot do: and took the book out of the right hand of him that sat upon the throne; See Gill on Rev 5:1; it being given unto him, as in Rev 1:1; and a commission and authority to open it, and make it manifest to others, and to accomplish the several events, in the several periods of time, it points unto.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“He came and took the book - This verse may be properly explained by John, Joh 1:18. No man hath seen God at any time; the only-begotten Son, which is in the bosom of the Father, he hath Declared him. With Jesus alone are all the counsels and mysteries of God.”
1849
A.D.
1774–1849
“He….took the book, [3]… and when he had opened it, or was about to open it, (in the Greek is only, he took it: which was a sign that he would open it)… the four and twenty ancients fell down before the Lamb, to adore him, as appears by what follows, ver. 13. — Having every one of them harps to celebrate his praise, and golden vials full of odours, which are the prayers of the saints: which shews that the saints in heaven offer up before the throne of the Divine Majesty the prayers of the faithful. (Witham) — Harps, &c. These harps are symbols of the praise which good men render to God; and the vials full of odours represent the prayers of the saints. In conformity with this idea, St. John wishes to represent these four and twenty ancients as so many senators, who present to the Almighty the prayers and homages of good men on earth. (Estius; Clement of Alexandria) — This also is an imitation of what was practised in the temple, in which were always around the altar, in times of sacrifice, Levites with musical instruments, priests with vials to contain the wine and blood, and censers to hold the incense (Calmet) — The prayers of the saints. Here we see that the saints in heaven offer up to Christ the prayers of the faithful upon earth. (Challoner)”
Source
1871
A.D.
1871
“The book lay on the open hand of Him that sat on the throne for any to take who was found worthy [ALFORD]. The Lamb takes it from the Father in token of formal investiture into His universal and everlasting dominion as Son of man. This introductory vision thus presents before us, in summary, the consummation to which all the events in the seals, trumpets, and vials converge, namely, the setting up of Christ's kingdom visibly. Prophecy ever hurries to the grand crisis or end, and dwells on intermediate events only in their typical relation to, and representation of, the end.”
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.