William Miller, in addition to ignoring the warnings of Jesus about no man knowing the day or the hour, or that the Son of Man will come at a time you think not, also indicated that the earth is the sanctuary to be cleansed by fire.
Ellen White, while noting that the MIllerites were wrong on this point, says the rest of the Christian world also held this wrong view!
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Great Controversy, chapter 23
"
In common with the rest of the Christian world, Adventists then held that the earth, or some portion of it, was the sanctuary."
And a bit later on:
"In their investigation they learned that there is no Scripture evidence sustaining the popular view that the earth is the sanctuary; but they found in the Bible a full explanation of the subject of the sanctuary, its nature, location, and services; the testimony of the sacred writers being so clear and ample as to place the matter beyond all question. The apostle Paul, in the Epistle to the Hebrews, says..."
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To claim that the rest of the Christian world was ignorant of the book of Hebrews, and its reference to the heavenly sanctuary is untrue.
For centuries Christians had known and spoken of it.
Chrysostom:
ccel.org
“For Christ is not entered into the Holy Places made with hands” (he says) “which are the figures
3102 of the True.” (These then are true; and those are figures,
3103 for the temple too has been so arranged,
3104 as the Heaven of Heavens.)
Cyril of Jerusalem:
ccel.org
For the mystery has been fulfilled; the things that are written have been accomplished; sins are forgiven. For
Christ being come an High-Priest of the good things to come, by the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation, nor yet by the blood of goats and calves, but by His own blood, entered in once for all into the holy place, having obtained eternal redemption; for if the blood of bulls and of goats, and the ashes of an heifer, sprinkling the defiled, sanctifieth to the purifying of the flesh, how much more the blood of Christ1625? And again,
Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, by a new and living way, which He hath consecrated for us, through the veil, that is to say, His flesh1
Augustine:
ccel.org
What doth He, who is at the right hand of God, and intercedeth for us,
4974 like a priest entering into the inner places, and into the holy of holies, into the mysteries of heaven, He alone being without sin, and therefore easily purifying from sins
And not just centuries ago was this known, but it was still known in the time leading up to 1844:
Matthew Henry:
Hebrews 9, Matthew Henry's Commentary offers profound insights through meticulous analysis and historical context for Christian understanding.
www.studylight.org
Christ, our high priest, has entered into heaven, not as their high priest entered into the holiest, with the blood of bulls and of goats, but by his own blood, typified by theirs, and infinitely more precious. And this,
Not for one year only, which showed the imperfection of that priesthood, that it did but typically obtain a year's reprieve or pardon. But our high priest entered into heaven
once for all, and has obtained not a yearly respite, but eternal redemption, and so needs not to make an annual entrance.
Robert Haldane:
Hebrews 9, Haldane's Exposition on Romans & Hebrews provides rich insights, delving into original texts and historical context for deeper understanding.
www.studylight.org
He is set at the right hand of the majesty in the heavens.
Hebrews 8:1. This is the sanctuary of which He is minister. This is the true tabernacle into which He has entered by His own blood.
Albert Barnes:
Hebrews 9, Barnes' Notes on the Whole Bible provides Christians with deep insights into the Scriptures, emphasizing original texts and historical context.
www.studylight.org
By a greater and more perfect tabernacle - The meaning is, that Christ officiated as high priest in a much more magnificent and perfect temple than either the tabernacle or the temple under the old dispensation. He performed the great functions of his priestly office - the sprinkling of the blood of the atonement - in heaven itself, of which the most holy place in the tabernacle was but the emblem.