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You must have missed this when I linked to the article
The 1260 Years Begin with the Implementation of Emperor Justinian's Decree Arian Ostrogoths under Theodoric had controlled Italy since 493, and had even imprisoned Pope John I, who died in Ostrogoth custody in Ravenna in 526. Catholic Emperor Justinian, who began waging open war with the Arians in the 530s, declared the Bishop of Rome the head of all Christian churches in 533, and commissioned his General Belisarius to destroy the Arian Vandals and Ostrogoths. The Vandals were defeated in 534 in the battle of Tricamarum. Turning his attention to the Ostrogoths, General Belisarius took Rome in December of 536, and under the direction of Emperor Justinian, deposed and exiled Pope Silverius who had been installed by the last Ostrogoth King of Italy, Theodahad, who had terrorized the clergy into electing his pro-Gothic candidate. Silverius died a prisoner. Belisarius installed Vigilius, a confidant of Empress Theodora, as the Bishop of Rome in March of 537. In quick reply, the Ostrogoths rallied and laid siege to Rome. When the siege was finally broken by General Belisarius in March of 538, the Ostrogoths withdrew from Rome in defeat, leaving it in the Emperor's control, and Vigilius as the Bishop of Rome (who reigned until 555 A.D.). So it was in 538 A.D. that Emperor Justinian's Decree of the supremacy of the Bishop of Rome over the Church could actually be implemented, beginning the prophetic 1260 years of temporal rule by the papacy.
The 1260 Years End with a Head Wound to Papal Power
The "head wound" to papal power was inflicted in 1798 when General Berthier of France captured Pope Pius VI, who soon died in captivity in Valence, on August 29, 1799.
538-1798 = 1260 years of temporal power of the Catholic Church, wherein they tortured and murdered hundreds of millions of people for Heresy, or for being Jews, witches, or what have you, whatever fit their fancy. Murder of the saints was a priority. Wholesale slaughter by the Mother Church. Give me a break. It doesn't surprise me at all that you are a member.
The Pope didn't have temporal power in 538 AD of any sort
What are you smoking?
The Papal states date to 754 with the donation of Pepin
And then you cite 1798 - Pope Pius VI was captured, but the papal states were restored after 1812 and Nappy's defeats. They were finally closed in 1871 with the unification of Italy
So neither of your dates make any sense. Neither does your Adventist non-Christian philosophy either, but that's another question, right?
Oh and just for your adventist person as I know that Adventists don’t read the Bible, nor can count, right? 1871-751 = 1120 years, nowhere near your biblically false 1260 YEARS. The Bible says it is 1260 DAYS and doubles down on that by replacing that with 3.5 years or 42 months.