There are basic rules for Bible interpretation that they teach in Bible college. A google search can bring up various web sites that talks about this. We know that John was writing to: "To the seven churches in the province of Asia". So the church today would be the secondary audience or reader of John's letter to the church.
Hermeneutics: the Eight Rules of Biblical Interpretation
Again let me reiterate that this is not John's Revelation. It is the Revelation of Jesus Christ that God the Father gave to his Son. John is an authorized messenger alongside the Angel who passed down that message onto him. So John becomes the head of the Church in his time, to be authorized to deliver the message to the entire Church that was located in the middle east.
Now as for who it was meant for, is not a very difficult question to answer. The letter originated and was authored by God the Father, where by his message is timeless. Because God the Father's message is timeless, it is therefore meant to be delivered to all the Church and throughout the Church Age, leading up to the Lord's coming. As the message states, for the time is at hand.
It would be preposterous to think that God the Father would dispense a pertinent message to his Son's Church if it were only for 0.001% of the audience, rather when you tie up old testament scripture, the message is timeless and it addresses all the Church.....
17I will surely bless you and make
your descendants as numerous as the stars in the sky and as the sand on the seashore. Your descendants will take possession of the cities of their enemies,
18and through your offspring
b all nations on earth will be blessed, because you have obeyed me.” (Genesis 22)
We can immediately discern that the old testament prophesy is fulfilled, through the seven Spirits of the Lord, dispensed upon the seven Churches of Jesus Christ Revelation, where the gospel will eventually find itself across the sea shores in the peoples of all nations. Jesus said the gospel will be preached in all the world, then the end cometh.
This means the time is at hand rallies the Church to continue its great commission works until the end. Obviously since we have the evidence before us, that all nations were not conscripted in Christ during John passing down the message, hence the audience of his time accounted for only 0.001% of the audience that the seven Spirits represents, within the context of the great commission to preach the gospel.
In Zechariah these seven Spirits are as follows....
Bible >
KJV > Zechariah 4
◄ Zechariah 4
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King James Bible
The Gold Lampstand is the symbol of the entire new covenant Church.
This is paralleled in the Revelation of Jesus Christ.
1And the angel that talked with me came again, and waked me, as a man that is wakened out of his sleep,
2And said unto me, What seest thou? And I said, I have looked, and behold a candlestick all
of gold, with a bowl upon the top of it, and his seven lamps thereon, and seven pipes to the seven lamps, which
are upon the top thereof:
3And two olive trees by it, one upon the right
side of the bowl, and the other upon the left
sidethereof.
4So I answered and spake to the angel that talked with me, saying, What
are these, my lord?
5Then the angel that talked with me answered and said unto me, Knowest thou not what these be? And I said, No, my lord.
6Then he answered and spake unto me, saying, This
is the word of the LORD unto Zerubbabel, saying, Not by might, nor by power, but by my spirit, saith the LORD of hosts.
7Who
art thou, O great mountain/Church congregation? before Zerubbabel
thou shalt become a plain/salvation highway: and he shall bring forth the headstone Jesus Christ
thereof with shoutings,
crying, Grace, grace unto it.
8Moreover the word of the LORD came unto me, saying,
9The hands of Zerubbabel have laid the foundation of this house; his hands shall also finish it; and thou shalt know that the LORD of hosts hath sent me unto you.
10For who hath despised the day of small things? for they shall rejoice, and shall see the plummet in the hand of Zerubbabel
with those seven; they are the eyes of the LORD, which run to and fro through the whole earth.
The Two Olive Trees
11Then answered I, and said unto him, What
are these two olive trees upon the right
side of the candlestick and upon the left
side thereof?
12And I answered again, and said unto him,
What be these two olive branches which through the two golden pipes empty the golden oil out of themselves? 13And he answered me and said, Knowest thou not what these
be? And I said, No, my lord.
14Then said he,
These are the two anointed ones, that stand by the Lord of the whole earth.
The symbol of the Church from Jesus to the end is the two witnesses that minister the gospel onto the world. It is the church that pours out and has been pouring out the golden oil of salvation through its commission to preach the gospel and to convert many to Christ Jesus as the many disciples of Christ.