Well said.
Those who truly believe they are in the Kingdom of the Father, where his Son is the head and rules today, the first of the resurrected dead, these are the true Christians in the 'Body' of our Savior.
I just take an exception with your last line concerning Babylon. It has fallen as Jerusalem and its rebellious spirit broken, soon after Christ. It may become revived again, in a different form, as possibly an all encompassing system of governance from the same 'origin' of the same physical and spiritual nature - Jerusalem.
That Babylon the Great is a global false religious center can be seen from its prototype of ancient Babylon, for in its infancy over 4,000 years ago, it was named Babel by Jehovah God, that means "confusion", because Jehovah confused their languages to stop the city's inhabitants from completing the Tower of Babel, with the people wanting to "make a celebrated name for ourselves".(Gen 11:1-9)
This "confusion" has been more than just languages, for down through history, it became a false religious center for the region, that eventually spread out earth wide, continuing to bring confusion as to what is right and wrong, what is truth and what is false.
For example, at Jeremiah 51:47, it says: "This is what Jehovah says: “Here I am raising up a destructive wind against Babylon and the inhabitants of Leb-kaʹmai..........Flee out of the midst of Babylon, and escape for your life. Do not perish because of her error. For it is the time for Jehovah’s vengeance."(Jer 51:1, 6; compare this with Revelation 18:4, 5 that says: "And I heard another voice out of heaven say: “Get out of her, my people, if you do not want to share with her in her sins, and if you do not want to receive part of her plagues. For her sins have massed together clear up to heaven, and God has called her acts of injustice to mind")
"He is paying her back for what she has done".(Jer 51:6b; compare Revelation 18:6 that says: "Repay her in the way she treated others, yes, pay her back double for the things she has done; in the cup she has mixed, mix a double portion for her")
"She made all the earth drunk. From her wine the nations have drunk; That is why the nations have gone mad. Suddenly Babylon has fallen and is broken. Wail over her !"(Jer 51:7, 8; compare Revelation 17:1, 2, that says: "One of the seven angels who had the seven bowls came and said to me: “Come, I will show you the judgment on the great prostitute who sits on many waters, with whom the kings of the earth committed sexual immorality [or false religious teachings and practices that have been like sex, seducing its people to do wicked deeds, making ' nations go mad ' ] and earth’s inhabitants were made drunk [or under false religions influence] with the wine of her sexual immorality")
"Therefore this is what Jehovah says: “Here I am pleading your (or symbolic Israel's) legal case, and I will execute vengeance for you. I will dry up her sea and make her wells dry. And Babylon will become piles of stones, a lair of jackals, an object of horror and something to whistle at, without an inhabitant.........Therefore look ! the days are coming when I will turn my attention to
the graven images of Babylon. All her land will be put to shame, and all her slain will fall in her midst."(Jer 51:36, 47; compare Revelation 18:8 that says: "That is why in one day her plagues will come, death and mourning and famine, and she will be completely burned with fire, because Jehovah God, who judged her, is strong"; see also Rev 14:8 that says: "Another, a second angel, followed, saying: “She has fallen ! Babylon the Great has fallen, she who made
all the nations drink of the wine of the passion of her sexual immorality !”)
At Ezekiel 21, it says that "the king of Babylon (King Nebuchadnezzar) stops to use divination at the fork in the road, where the two roads branch off. He shakes the arrows. He consults his idols; he examines the liver. The divination in his right hand is pointed toward Jerusalem, to set up battering rams, to give the word for slaughter, to sound the battle cry, to set battering rams against the gates, to throw up a siege rampart, to build a siege wall."(Eze 21:21, 22) Thus, ancient Babylon was extremely religious, but most notably false.
And archaeology has found this: Evidence from excavations and from ancient texts points to the existence of more than 50 temples. The principal god of the imperial city was Marduk, called Merodach in the Bible. It has been suggested that Nimrod was deified as Marduk, but the opinions of scholars as to identifications of gods with specific humans vary. Triads of deities were also prominent in the Babylonian religion. One of these, made up of two gods and a goddess, was Sin (the moon-god), Shamash (the sun-god), and Ishtar; these were said to be the rulers of the zodiac. And still another triad was composed of the devils Labartu, Labasu, and Akhkhazu. Idolatry was everywhere in evidence. Babylon was indeed “a land of graven images,” filthy “dungy idols.”—Jer 50:1, 2, 38.(
Insight on the Scriptures, Vol 1, pg 237)
An ancient cuneiform inscription gives us some idea of just how religious ancient Babylon was: Altogether there were in Babylon 53 temples of the chief gods, 55 chapels of Marduk, 300 chapels for the earthly deities, 600 for the heavenly deities, 180 altars for the goddess Ishtar, 180 for the gods Nergal and Adad and 12 other altars for different gods.
Historical records show that Babylon was a “
land of graven images, and because of their frightful visions they keep acting with
madness” (Jer. 50:38), that its priests ruled on nearly every activity of the Babylonian’s life and that the people could undertake no important activity without consulting the Babylonian priests and practitioners of magical arts.
Thus, Babylon the Great is the false religions of the world under one roof, that has blasphemed Jehovah God by telling falsehoods, lies, so that this global entity will be the first to go at "the great tribulation" (Matt 24:21), and be "completely burned with fire" at the hands of its customers as a "great prostitute", the "kings of the earth" or political rulers that it once cuddled up to (Rev 17:1, 2), "the ten horns" or member nations of the United Nations, "the scarlet-colored wild beast".(Rev 17:3, 16, 17)