What makes you think Peter wrote 2nd Peter or any of the other stuff? The fact that Peter was in a political and religious battle over who was the new leader might have something to do with this.<quoted text> If Paul was preaching heresy why did the apsotle Peter say this in 2 Peter 3:15-16 And account that the longsuffering of our Lord is salvation, even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own damnation. Paul himself said that if any man preaches anyother gospel let him be accursed. So if Paul was preaching something contrary to what the other apostles were preaching why didn't Peter give a warning to these people he was writing to, to beware of Pauls doctrine?
His endorsement of Paul was political not spiritual.