Relevant

TWELVE APOSTLES AND PAUL:

DID THEY REFUSE TO COMMEND PAUL?

Luther and many pro-Paul scholars admit Paul's Epistle to the Galatians reflects (1) Paul's putting down the leading apostles, intending us to understand they are "false apostles" who teach "another Jesus" than Paul (see Paul Knew the 12 Taught Another Jesus); and (2) the 12 apostles had refused to give him a commendation in writing as Paul had hoped.

As to proof of #2, see Jason File, Letters of Recommendation in Early Church (2006) at pages 70-72 of PDF (refuting contrary views.)

Also as proof of #2, see Eisenman on Paul (detailing proofs that Paul did not receive apostolic letters of recommendation, based upon 2 Cor. 10:9-18; 2 and 1 Cor. 9:1-2 when read together with 2 Cor. 11:13-15 and 2 Cor. 3:1.)

Paul thus himself impliedly admits the 12 rejected supporting Paul's authority in the true church which Paul hoped to receive by a written commendation. Paul had a corresponding disdain, implying the 12 were false apostles.

This conflict boiled over in Paul writing that he did not need anyone else's commendation for he "commends" himself "in every way," by "great endurance,...hard work," and "through glory and dishonor, bad report and good report, genuine, yet regarded as impostors." (2 Cor. 6:3-6 NIV.)

Hence, the refusal by the 12 to commend Paul included telling Paul they regarded him as an impostor apostle. Or perhaps more specifically that Paul followed an impostor Jesus which Jesus warned about in Matthew 24.