Jeremiah 51 bears a lot of resemblance to Revealation when speaking of Babylon. Specifically this is a prophecy about Gods vengeance upon Babylon for what they did in Zion. I encourage people to read the whole chapter.

“Therefore behold, the days are coming That I will bring judgment on the carved images of Babylon; Her whole land shall be ashamed, And all her slain shall fall in her midst. Then the heavens and the earth and all that is in them Shall sing joyously over Babylon; For the plunderers shall come to her from the north,” says the Lord.”
‭‭Jeremiah‬ ‭51‬:‭47‬-‭48‬ ‭NKJV‬‬

In Titus 1:4, Paul calls Titus his "true son" in the ideological sense, not biological. This is the same basic idea as when he wrote that a "true Jew" is one who is a Jew inwardly. It's only a metaphor. It doesn't mean that biological children are no longer children nor that the descendants of Judah are no longer Jews.

How is Jerusalem Babylon and simultaneously "the beloved city"?

“They went up on the breadth of the earth and surrounded the camp of the saints and the beloved city. And fire came down from God out of heaven and devoured them.”
‭‭Revelation‬ ‭20‬:‭9‬ ‭NKJV‬‬

Rosh Chodesh Sighted!
The Rosh Chodesh, which is the observed-crescent New Moon, was sighted from Israel on the evening of 9/4/2024, marking the beginning of the 7th scriptural month. The sighting was made from Jerusalem at 7:19pm by Devorah Gordon, Chaya, and at least one other person.
This means that the first commanded festival of the 7th month, Yom Teruah, the “Day of Blowing” (the shophar), begins this evening at sunset. Reference to this festival is found in Vayyiqra (Leviticus) 23. This festival also begins the Yamim Nora’im, the ten “Days of Awe,” which are a time of reflection, repentance, and a turning away from sin - Teshuvah.
Have a lovely and meaningful festival, Chaverim, and L’shana Tovah Tiketeivu! – May you be inscribed for an Excellent new year!

I think there is more Scripture in support of Jerusalem being taught by the nations how to sin than the other way around. For example:

“Then it shall be, after I have plucked them out, that I will return and have compassion on them and bring them back, everyone to his heritage and everyone to his land. And it shall be, if they will learn carefully the ways of My people, to swear by My name, ‘As the Lord (Yahuwah) lives,’ as they taught My people to swear by Baal, then they shall be established in the midst of My people. But if they do not obey, I will utterly pluck up and destroy that nation,” says the Lord.”
‭‭Jeremiah‬ ‭12‬:‭15‬-‭17‬ ‭NKJV‬‬

Another problem I have with the Babylon is Jerusalem theory is the jubilant nature of heaven at its destruction. Yeshua wept over Jerusalem during a time when it was in fact deserving of punishment, but I'm susposed to believe that heaven is throwing a party?

And he answered him, ‘Sir, let it alone this year also, until I dig around it and put on manure. Then if it should bear fruit next year, well and good; but if not, you can cut it down.’
Luke 13:8-9

Just because God hasn't cut you down yet, doesn't mean he won't do it in the future. Consider your continued life to be evidence of God's enduring grace, another opportunity to repent from sin and cultivate the fruit of a righteous life.

How often does the Word of YHWH get this much in our faces, overwhelming and deafening … and yet even still we manage to miss the moment.

Awake! Arise! Apologize! About-face! Advance!