I wrote a reply to some questions and would like you to check it for any grammatical issues and let me know whether my point is clear or unclear. Here is the email I received: 
Greetings in Christ's name?
Hope you are preserved in the LORD.
I would like to learn something in regard to the SEALS in Rev 6. When was the first seal first opened? I have been taught that the opening of the SEALS coincided with the history of the church i.e. that as each of the seven seals is broken a picture or representation of events to take place on the earth during that seal period is described.
For example;
We were taught that these seals cover the seven eras or periods of time from the time of the apostles to the second coming of our Lord Jesus Christ; and, to a large extent, they depict: religious affairs in the world. The apostolic age is from 33 AD to 100 AD.
It gets confusing because according to Rev 4 God the Father is in the HOLY PLACE of the sanctuary in heaven. Rev 5 He moves to the MOST PLACE. Verse 1 says The Father has a book sealed with 7 seals. Verse 2 is a question of who is worthy to open the book. Verse 5 is good news that Christ is worthy to open the book and loose the seals. Chapter  6  V 1 is the opening of the first seal.
Here is my confusion;
God moved to the most holy place in 1844 so that Christ loosed the first seal in 1844. How then can the apostolic period be begining in 33 AD yet the first seal was loosed in 1844?

Now, here is my potential response:
My potential reply:

Hello my brother, it's very nice to hear from you again. 😊

As I'm sure you know, one of the pillar truths that God led early SDAs to understand is in regard to the cleansing of the heavenly sanctuary (Daniel 8—the 2300 day prophecy). The end of this prophecy marks the time when the judgment for the dead would begin (Oct. 22, 1844). Keep in mind, in order to perform a judgment and pass sentencing, there needs to first be an investigation of the facts. So, when the judgment of the dead began in 1844, it consisted of an investigation of the records kept in heaven of the deeds done by God's professed people. In connection with the whole subject of the investigative judgment, early SDAs often pointed to Revelation 3:7, 8 as one of the scriptures relevant to the topic: 
“These things saith he that is holy, he that is true, he that hath the key of David, he that openeth and no man shutteth, and shutteth and no man openeth; I know thy works; behold, I have set before thee an open door, and no man can shut it.” {Rev. 3:7,8}

And, in 4SP Chapter 19, Ellen White explains that this "open door" is the door to the most holy apartment in the heavenly sanctuary. In the earthly sanctuary, the door to the most holy apartment was opened on the Day of Atonement when God's people faced a sort of judgment. Everyone who had confessed and repented of their sins had their sins wiped away and their records were now clean. These events pointed to what would take place in the antitypical Day of Atonement in which God's people will face a judgement and either have their records wiped clean, or have their names removed from the Lamb's book of life. But of course, this requires an investigation of how God's professed people lived their lives, and only those who have demonstrated that they would be safe in a sinless society will be able to pass through this investigation and granted entrance into a holy heaven. Here's a brief statement from Ellen about that:
"As you hope to be finally exalted to join the society of sinless angels, and to live in an atmosphere where there is not the least taint of sin, seek purity; for nothing else will abide the searching test of the day of God, and be received into a pure and holy heaven." {Ellen White - CTBH 131.2}

From all this, we can see that John was shown a vision of this investigative judgement while it is process, and then the rest of the book of Revelation continues to give information relative to this judgment. However, this is made even more plain by comparing Revelation with what is found in Daniel. Remember, Daniel 8 has the prophecy of the 2300 days which marks the commencement of an investigative judgment. But in the previous chapter, Daniel was shown a courtroom judgment scene being set up. By comparing what Daniel saw in chapter 7 with what we find in The Revelation, it becomes obvious that what John saw is actually the same judgment scene that was shown to Daniel. I'll place some relevant portions side by side for comparison:

DANIEL’S VISION (Daniel 7)                                                                                     JOHN’S VISION (The Revelation)

1. “I beheld till the thrones were cast down.” Dan. 7:9                                   1. “And I saw thrones.” Rev. 20:4 

2. “And the Ancient of Days did sit.” Dan. 7:9                                                    2. “And One sat on the throne.” Rev. 4:2.

3. “A fiery stream issued and came forth from before Him.”                          3. “And I saw as it were a sea of glass mingled 
Dan. 7:10.                                                                                                                      with fire.” Rev. 15:2.

4. “One like the Son of man came…to the Ancient of Days,                             4. “In the midst of the throne and of the four
and they brought Him near before Him.” Dan. 7:13.                                              beasts…stood a Lamb. Rev. 5:6.

5. “The books were opened.” Dan. 7:10.                                                             5. “And the books were opened.” Rev. 20:12.

6. “Thousand thousands ministered unto Him, and ten                                   6. “I heard the voice of many angels round about the
 thousand times ten stood before Him.” Dan. 7:10.                                               throne…and the number of them was ten thousand
                                                                                                                                          times ten thousand, and thousands of thousands.”
                                                                                                                                          Rev. 5:11.

7. “The judgement was set, and the books were opened.” Dan. 7:10            7. “The hour of His Judgment is come.” Rev. 14:7. 
                                                                                                                                          “And I saw the dead, and great, stand before God; and the 
                                                                                                                                          books were opened: and another book was opened, which 
                                                                                                                                          is the book of life: and the dead were judged out of those 
                                                                                                                                          things which were written in the books according to their 
                                                                                                                                          works.” Rev. 20:12




So, Revelation 4 and onward is actually in the context of the investigative judgement and as SDAs, we know that this judgment spans the whole history of the world. And while Ellen White didn't explain the specifics of what time period each seal represents, she did actually say that the seals cover the entire history of the world. Here are a couple of paragraphs from a letter she wrote in 1898:
👇
We ask John what he saw and heard in the vision at Patmos, and he answers: “And I saw in the right hand of him that sat upon the throne a book written, within and on the backside, sealed with seven seals. And I saw a strong angel proclaiming with a loud voice, Who is worthy to open the book, and to loose the seals thereof? And no man in heaven, nor in earth, neither under the earth, was able to open the book, neither to look thereon.” [Revelation 5:1-3.] {Lt 65, 1898, par. 16}
There in His open hand lay the book, the roll of the history of God’s providences, the prophetic history of nations and the church. Herein was contained the divine utterances, His authority, His commandments, His laws, the whole symbolic counsel of the Eternal, and the history of all ruling powers in the nations. In symbolic language was contained in that roll the influence of every nation, tongue, and people from the beginning of earth’s history to its close. {Lt 65, 1898, par. 17} 🔗 https://legacy.egwwritings.org/?ref=en_Lt.65.1898.par.17&para=14063.6141023

So, when Jesus opens the seals, this is a symbolic representation of his engagement in reviewing various periods of earth's history. Revelation 4:1 says the angel told John he was going to see what would be "hereafter," but this doesn't mean the contents of what's written in the scroll were all things that were to happen in the future. What John saw was Jesus opening the scroll one seal at a time (this is what began in 1844), and each portion of the scroll contains a record of something different from this earth's history. From what Ellen says, the contents of the scroll cover the entirety of earth's history, so with the opening of the first seal, we should expect that it contains a record of the very earliest portion of this earth's history. That fits perfectly with how we know the investigative judgment takes place; it begins with the time of Adam and progresses forward from there. So even though the investigative judgement didn't begin until "hereafter" from John's perspective, the judgement covers events that happened long before John received this vision.

Does that fully answer your questions? If not, please feel free to mention it and let me know what it was that I failed to address. Many blessings to you, and we look forward to hearing from you again!