Frank and Luigi,
usually the truth (of God) is deeper than we may think …
while I am not able to give a complete definition for “Babylon”, I see it as concentrating ALL evil/wicked characteristics pertaining to this world (while God’s people is composed by people who were draw out from this world) ..
Now, God’s prophetical word gives to us an important information: that there exist a “daughter of Babylon” … see the two prophets – Isaiah 47 – the whole chapter- and Zechariah 2:7 and put these verses into “equation” : we see that the “main” characteristics of the “Babylon”(the mother) had been “borrowed” by the “daughter of Babylon’ , so that they resemble completely , as stated in Ezekiel 16:44
“Behold, every one that useth proverbs shall use this proverb against thee, saying, As is the mother, so is her daughter.”
How happened that ? Simply, as Jehovah has foretold in the Song of Moses , His children ha begun to practice (during the latter days – as their worship) things, teachings and religious customs and practices (injustice, idolatry) as Babylon does
15. But Jeshurun waxed fat, and kicked:
Thou art waxed fat, thou art grown thick, thou art become sleek;
Then he forsook God who made him,
And lightly esteemed the Rock of his salvation.
16 They moved him to jealousy with strange gods;
With abominations provoked they him to anger.
17 They sacrificed unto demons, which were no God,
To gods that they knew not,
To new gods that came up of late,
Which your fathers dreaded not.
18 Of the Rock that [f]begat thee thou art unmindful,
And hast forgotten God that gave thee birth.
19 And Jehovah saw it, and abhorred them,
Because of the provocation of his sons and his daughters.
20 And he said, I will hide my face from them,
I will see what their end shall be:
For they are a very perverse generation,
Children in whom is no faithfulness.
So, taking into consideration ALL God’s word, the “organization” that was built by and within “God’s people” has become a “daughter of Babylon” to whom Jehovah is addressing in Isaiah 47 – read it!
Now, when the “day of Judgement” comes/begins, through the expression BtG (Rev 18) Jehovah means ALL the “ways of worship” which disobey Him (included the “way” of taught by WT or the “daughter”)
Here should be important to see Jehovah’s clear will toward His “children of Jacob” expressed in Zechariah 2:7
for further information I invite you to see my thread “Jehovah’s people during the latter days” on this forum