Only on an Adventist web forum, that specifically talks about Adventists beliefs and doctrine, can an Adventist be accused of flaming for expressing their personal beliefs obtained through study and teaching.
I would like to offer this. As a Catholic, or any other denomination, if you are offended by someone of the Adventist faith calling the RCC the "harlot of Babylon" I suggest you leave the forum.
As an Adventist, based on my study and beliefs, I wish to express this POV here, I am more than entitled.
Daniel 7 and Revelation 13 Compared
A Woman Rides The Beast
(Revelation 17)
Religious Identity
The harlot is seen as one who demands a religious role.
Apostasy. A harlot is a symbol of a religious system in apostasy or rebellion against God. It is a church system with wrong teachings that ignores the word of God. It has formed an illegal union with another authority and is guilty of spiritual adultery.
The vision of Isaiah the son of Amoz, which he saw concerning Judah and Jerusalem in the days of Uzziah, Jotham, Ahaz, and Hezekiah, kings of Judah." ... "How is the faithful city become an harlot! it was full of judgment; righteousness lodged in it; but now murderers. (Isaiah 1: 1, 21.)
As they were increased, so they sinned against me: therefore I will change their glory into shame. They eat up the sin of my people, and they set their heart on their iniquity. And there shall be, like people, like priest: and I will punish them for their ways, and reward them their doings. For they shall eat, and not have enough: they shall commit prostitution, and shall not increase: because they have left off to take heed to the Lord. Prostitution and wine and new wine take away the heart. My people ask counsel at their stocks, and their staff declares to them: for the spirit of prostitution has caused them to err, and they have gone prostituting from under their God. (Hosea 4: 7-12. )
Authority of God. The harlot sits over many waters. This represents a church exercising the authority of God over many people.
... the great harlot that sits upon many waters. (Revelation 17: 1)
It is God who is supposed to sit over many waters and rule nations.
And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters. (Genesis 1: 2)
Give to the Lord the glory due to his name; worship the Lord in the beauty of holiness. The voice of the Lord is upon the waters: the God of glory thunders: the Lord is upon many waters. (Psalm 29: 2-3)
Harlot Priest. The Harlot is pictured as a disobedient priestess.
Gold, Purple, Red ... the woman was arrayed in purple and scarlet color, and decked with gold ... (Revelation 17: 4)
Notice the description of the garments of the true priests, and the colors contained within them. Compare these descriptions to the description of the colors of the clothing worn by the Great harlot.
Gold, Purple, Red, Blue. And these are the garments which they shall make; a breastplate, and an ephod, and a robe, and a broidered coat, a mitre, and a girdle: and they shall make holy garments for Aaron your brother, and his sons, that he may minister to me in the priest's office. And they shall take gold, and blue, and purple, and scarlet, and fine linen. (Exodus 28: 4-5)
Notice that the harlot is missing the color blue. What color does this represent?
Blue Law. And the Lord spoke to Moses, saying, Speak to the children of Israel, and bid them that they make them fringes in the borders of their garments throughout their generations, and that they put upon the fringe of the borders a ribband of blue: And it shall be to you for a fringe, that you may look upon it, and remember all the commandments of the Lord, and do them; and that you seek not after your own heart and your own eyes, after which you use to go prostituting: That you may remember, and do all my commandments, and be holy to your God. I am the Lord your God, which brought you out of the land of Egypt, to be your God: I am the Lord your God. (Numbers 15: 37-41)
So, what we see is the symbolism that the Great harlot represents a false priestly role, that is lacking the Law of God. It does not include all of God's ten Commandment Law and the result is prostitution.
Antichrist. The harlot and the beast are portrayed together as the Antichrist, or a rival of Christ.
Omnipresent Nature. The beast claims to exist in all time and have the power of resurrection. It has this power because it came back to life after it "is not".
... mystery of the woman, and of the beast.. ... beast that was, and is not, and yet is ... (Revelation 17: 7-8)
I am Alpha and Omega, the beginning and the ending, said the Lord, which is, and which was, and which is to come, the Almighty. ... I am the first and the Last and the Living One; and I was dead, and behold I am alive forever, and I have the keys of death and of Hades. (Revelation 1: 8, 17-18)
Jesus, at the beginning of Revelation, declares Himself to be the one which is, and which was and which is to come. In direct opposition, the Beast power claims to be the "beast that was, and is not, and yet is". Jesus claims to have the keys, but notice also that the pope claims to hold the triple keys. These are the keys of Heaven, Hell and Purgatory. He thinks that he controls where you go.
Many Daughters. The Harlot is the mother of many daughter churches that have followed in her sin. ... The Mother of Harlots ... (Revelation 17: 5)
Remember, women in symbolic Bible prophecy, represent Churches. So the "Mother Church" has other churches that have come out of her, that have her characteristics still in them. The "Mother Church" has influenced her "daughters" to also become harlots. They apostatize from their proper relationship to Christ (God) and became guilty of prostitution with the world and idolatry.
Political Identity
The harlot is seen as one who controls people and political powers of the whole world.
Mystery Name. The Harlot has the Mystery of the Beast written on her forehead. The mystery number is 666.
and on her forehead, a name was written, a mystery, "Babylon the Great, the Mother of Harlots and of the Abominations of the Earth". (Revelation 17: 5)
And he causes all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads:" "Here is wisdom. Let him that has understanding count the number of the beast: for it is the number of a man; and his number is Six hundred sixty and six. (Revelation 13: 16, 18)
We learned in our study of Revelation 13 what it means to have the mark of the beast written on ones forehead. It is to mentally ascribe to and agree with the beast, to be committed to the Beast's authority.
Unknown Name. Revelation 19: 12 describes Christ as having an unknown name.
Mystery of God. This is the Gospel. Specifically, it is the process by which God will write His name on our foreheads. The mystery of the woman is the process by which she writes her character on the people of Babylon.
Global. The Harlot is identified as a great city with global influence.
The woman whom you saw is that great city which reigns over the kings of the earth. (Revelation 17: 18)
Here is the mind which has wisdom. The seven heads are seven mountains upon which the woman sits. (Revelation 17: 9)
It is within the city of Rome, called the city of seven hills, that the entire area of Vatican Sate proper is now confined. The Catholic Encyclopedia (Thomas Nelson, 1976), s.v. "Rome."