Very interesting conclusion. How would the 7 churches of Revelation, to whom the book is addressed, know all this? The average Christian could not afford to buy any of the NT books and highly unlikely they ever heard the OT.
The Isaiah 65:21-25 passage pertains only to Jerusalem.
Isaiah 65:19-20
(19) And I will rejoice in Jerusalem, and joy in my people: and the voice of weeping shall be no more heard in her, nor the voice of crying.
(20) There shall be no more thence an infant of days, nor an old man that hath not filled his days: for the child shall die an hundred years old; but the sinner being an hundred years old shall be accursed.
The Zechariah 13:8-9 passage pertains only to the house of David and Jerusalem.
Zechariah 13:1-2
(1) In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem for sin and for uncleanness.
(2) And it shall come to pass in that day, saith the LORD of hosts, that I will cut off the names of the idols out of the land, and they shall no more be remembered: and also I will cause the prophets and the unclean spirit to pass out of the land.
The duty of the Church was to publish the Bible so every home had one. There was no suggestion they hide the Bible and then try and educated the people about what is inside it.
Ac:10:37:
That word,
I say,
ye know,
which was published throughout all Judaea,
and began from Galilee,
after the baptism which John preached;
M't:24:14-15:
And this gospel of the kingdom shall be preached in all the world for a witness unto all nations;
and then shall the end come.
When ye therefore shall see the abomination of desolation,
spoken of by Daniel the prophet,
stand in the holy place,
(whoso readeth,
let him understand
Isaiah:65 is about the new earth era, that makes 'Jerusalem' New Jerusalem as described in Re:21.
Re:21:1-2:
And I saw a new heaven and a new earth:
for the first heaven and the first earth were passed away;
and there was no more sea.
And I John saw the holy city,
new Jerusalem,
coming down from God out of heaven,
prepared as a bride adorned for her husband.
Jerusalem during the 1,000-year reign doesn't have any walls:
Eze:38:11:
And thou shalt say,
I will go up to the land of unwalled villages;
I will go to them that are at rest,
that dwell safely,
all of them dwelling without walls,
and having neither bars nor gates,
The last 3 verse in Zec:13 belong to the passage in Zec:14. The 'little ones' are the Gentiles Peter went to in Acts:10.
M't:26:56:
But all this was done,
that the scriptures of the prophets might be fulfilled.
Then all the disciples forsook him,
and fled.
Ac:10:17-20:
Now while Peter doubted in himself what this vision which he had seen should mean,
behold,
the men which were sent from Cornelius had made enquiry for Simon's house,
and stood before the gate,
And called,
and asked whether Simon,
which was surnamed Peter,
were lodged there.
While Peter thought on the vision,
the Spirit said unto him,
Behold,
three men seek thee.
Arise therefore,
and get thee down,
and go with them,
doubting nothing:
for I have sent them.
Zec:13:7-9:
Awake,
O sword,
against my shepherd,
and against the man that is my fellow,
saith the LORD of hosts:
smite the shepherd,
and the sheep shall be scattered:
and I will turn mine hand upon the little ones.
And it shall come to pass,
that in all the land,
saith the LORD,
two parts therein shall be cut off and die;
but the third shall be left therein.
And I will bring the third part through the fire,
and will refine them as silver is refined,
and will try them as gold is tried:
they shall call on my name,
and I will hear them:
I will say,
It is my people:
and they shall say,
The LORD is my God.
Zec:14:1-3:
Behold,
the day of the LORD cometh,
and thy spoil shall be divided in the midst of thee.
For I will gather all nations against Jerusalem to battle;
and the city shall be taken,
and the houses rifled,
and the women ravished;
and half of the city shall go forth into captivity,
and the residue of the people shall not be cut off from the city.
Then shall the LORD go forth,
and fight against those nations,
as when he fought in the day of battle.
Zec:14:16:
And it shall come to pass,
that every one that is left of all the nations which came against Jerusalem shall even go up from year to year to worship the King,
the LORD of hosts,
and to keep the feast of tabernacles.