Good post, but consider how Paul knew what the scriptures contained.
Gal 1:11 But I certify you, brethren, that the gospel which was preached of me is not after man.
Gal 1:12 For
I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ.
And this after being caught up into heaven by our risen LORD. According to Col 1:26 Paul received even the mystery which hath been hid from ages and from generations, but now is made manifest to his saints:
2Co 12:2 I knew a man in Christ above fourteen years ago, (whether in the body, I cannot tell; or whether out of the body, I cannot tell: God knoweth;) such an one caught up to the third heaven.
2Co 12:3 And I knew such a man, (whether in the body, or out of the body, I cannot tell: God knoweth;)
2Co 12:4 How that he was caught up into paradise, and heard unspeakable words, which it is not lawful for a man to utter.