Yes, Paul gives an account of how he learned his gospel several times:
2 Corinthians 12:1 1
"It is not expedient for me doubtless to glory. I will come to visions and revelations of the Lord."
1 Corinthians 11:23
For I received from the Lord what I also passed on to you: that the Lord Jesus, on the night He was betrayed, took bread,
How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)
Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began,
The whole first chapter of Galatians should really be gone through, but I'll pick out the significant parts. Right from the beginning Paul affirms he is an apostle sent directly from Yeshua the Messiah, and not from men:
Paul, an apostle, (not of men, neither by man, but by Jesus Christ, and God the Father, who raised him from the dead;)
Paul begins to talk about certain men that seem to be teaching a different gospel than his.2 To affirm his authority, he again claims he was taught his gospel by none other than Messiah in Galatians 1:11-12
But I certify you, brethren, that the gospel which was preached of me is not after man.
For I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ.
After giving his account of his conversion,3 Paul says in Galatians 1:16-17 that even immediately after his conversion, he did not speak to any man, including the Apostles:
To reveal his Son in me, that I might preach him among the heathen; immediately I conferred not with flesh and blood:
Neither went I up to Jerusalem to them which were apostles before me; but I went into Arabia, and returned again unto Damascus.
- The translation of this verse is controversial. Here are a few different ways it's been translated
- For more details about who these men were and why it was so crucial for Paul to convince the Galatians that he received his gospel directly from Yeshua, please see What role did James have in Paul's conflict with Peter
- For a comparison of Paul's conversion accounts, please see Why are the three accounts of Paul's conversion on the road to Damascus different