Paul was taught of the SAME HOLY SPIRIT as James, Peter, and John and Jesus.
There is no verse in the NT that says that "Jesus was taught by the Holy Spirit".
Also, Paul told us that the Gospel that He preaches, .... he received it from "no Man".
In Acts 15, you find that the apostles met Paul, and from that time, they all had HIS Gospel..
Paul said of HIS Gospel, that is it "MY Gospel"... 3x in the NT.
This is why Paul said that if anyone preached any other Gospel this His..., then you become this one.
Galatians 1:8
The Holy Spirit that inspired Peter was defective and lead men into error?
That is not the issue.
The issue is timing.
In other words... when did an Apostle know Paul's Gospel..????? and obviously Peter didnt know it in Acts 2, as Paul was not yet called by Jesus into His Minstry as "the Apostle to the Gentiles".. to deliver "The Gospel of the Grace of God".
Also, in Acts 10......you find God giving Peter the revelation, that Gentiles can be saved... and that is 10 yrs after Jesus is back in Heaven.
So, it took time before all the Apostles had the same understanding that Paul had.. and in Acts 15, that was resolved, for them all.
It gets worse.
Paul said "If any man preaches a gospel other than the gospel that we preached to you Let him be a cursed."
Yes, and that is for today. = Gal 1:8
This ends when the Trib starts.
So, right now.. "in the time of the Gentiles".... when you hear or read that The Cross is only for some.. but not for the world.. as the Cult CALVINISTS teach, then they are teaching a FALSE Gospel that denies The Truth and rejects Paul's Gospel.
So did Peter preach a different Gospel that paul?
Of course......but, see, once again.... The Cross started a Transition from the OT... to the NT.....so, it took time before everything that had changed, doctrinally, was understood by all the Apostles.