I do think you're placing too much emphasis on Paul. The gospel did not start with Paul. It has been being preached throughout time, to all this world in all generations.
You seem to be identifying a point in time where the good news given Israel had come to age. It was time to bring salvation to the ends of the earth. As patterned by Adam, Eve, Able, Cain, Noah, Abraham.....list is too long. Paul was a key witness to the Gentiles, yes. So was Peter. Yes, I know the 'peter to the jews-paul to the gentiles' shtick. But I just think your making too much of that point. Israel was not completely veiled to Messiah. There were and are many faithful Jews.
What has been revealed and poured out as wine is eternal life, and unity with God through Jesus and his Spirit. It's been likened to saying God's Spirit was 'among' them in those days, but today He is within us'. Though I don't buy that completely either. Because I believe there were those who had the indwelling of the Spirit of God. The Spirit given Jesus was with them, but they did not know him as we know him now. This is true. But they knew him just the same.
They knew him and trusted that he is the Messiah. Because he came and saved them in their place. They didn't have to know what he would do at ground zero, they didn't need to have their minds opened in vision to see it. Though I believe David and Abraham did, among others. They just had to believe in who he was in the here and now. Their faith made them righteous. Their faith lead them to live for God.
Are you trying to say that all those born before Jesus were deficient in some way?
Deficient? No....A different program
Notice how Paul claims the gospel...
Galatians 1:11-18 King James Version (KJV)
11 But I certify you, brethren, that the gospel which was preached of me is
not after man.
12 For
I neither received it of man, neither was
I taught it, but by the
revelation of Jesus Christ.
13 For ye have heard of my conversation in
time past in the
Jews'
religion, how that beyond measure I persecuted the church of God, and wasted it:
14 And profited in the Jews' religion above many my equals in mine own nation, being more exceedingly zealous of the traditions of my fathers.
15 But when it pleased God, who separated me from my mother's womb, and called me by his grace,
16 To reveal his Son in me, that
I might preach him among the
heathen; immediately I conferred not with flesh and blood:
17
Neither went I up to Jerusalem to them which
were apostles before me; but I went into Arabia, and returned again unto Damascus.
18 Then after three years I went up to Jerusalem
To see Peter , and abode with him fifteen days.
Notice.....after 14 years!!! Of preaching to the gentiles, a gospel NOT received by men...(ABOVE) he comes back by revelation. Notice he says (ABOVE) he didn’t even goto the others to share HIS revelation of the mystery yet!! He makes the point...
Neither went I to Jerusalem, which were appostles before me. He only goes to see Peter AFTER 3 years of preaching a specific message!
Galatians 2 King James Version (KJV)
2 Then fourteen years after I went up again to Jerusalem with Barnabas, and took Titus with me also.
2 And I went up by revelation, and communicated unto them
That gospel which I preach among the gentiles,
BUT PRIVATELY to them which were of reputation, lest by any means I should run, or had run, in vain.
6 But of these who seemed to be somewhat, (whatsoever they were, it maketh no matter to me: God accepteth no man's person
for they who seemed to be somewhat in conference added nothing to me:
(Above) you can tell, the others were weary of Paul, and his revelation...and Paul shares his unspoken feelings, “God accepteth no mans persons” why?
Because he is portraying the “air” in the room, that what they are talking about makes no difference to him, he knows what Jesus told him, and he’s goin to do it.
7 But contrariwise, (opposite of what they thought!!!)when they saw that the gospel of the
uncircumcision was committed
unto me, as the gospel of the
circumcision was unto
Peter