Hi Sonnet,
The above does not prove Peter preached the same gospel as Paul taught, for Paul clearly emphasized and boasted about
his own gospel, being very covetous of it, being that given to him by visions and
his own personal revelations. Paul is clear that his gospel is uniquely his
by revelation. One has to accept his testimony, on his own word.
The above language using "we" does not necessarily include the original apostles of Jesus (who were led by James, Peter and John, being the pillars of the Jerusalem Community), for he boasted more than once of his exclusive gospel and 'grace', and even put them down before (see his attitude and rivalry with the original apostles in the book of Galations! The audacity). Paul was at odds and veered further away from the original apostles teachings, as his 'gospel' became more anti-law and was more palpitable to Gentiles, since traditional orthodox Jews would not buy his gospel, to which he barely made it out alive of Jerusalem more than once. He took his 'gospel' to the Gentiles, and rightly so, where those with more liberal pagan, eclectic belief systems would accept his teachings, who had were not learned Jews who knew their sacred law and traditions. To these he added his own spin on Jewish scriptures mixed with gnostic nuances, mystery religion symbols, greek philosophical concepts and once again, his own personal visions and revelations. This is all Paul had, and you have to believe all that by his own personal testimony. He was in a sense a lone ranger, who just claimed to see a light and hear a voice,
assuming it was Jesus.
Go
here for starters on objective research on Paul's claims.
Jesuswordsonly is also an amazing resource, for your own investigation.
Also, Peter was the first among the apostles to be called to preach to the Gentiles and gave the first major Gentile address,...nowhere do any of the original apostles endorse Paul as the sole apostle to the gentiles, neither do any of the original apostles call Paul an apostle. The original 12 even drew lots when Judas left the circle, and Mattias was chosen. Paul is not included in the original 12 apostles of the Lamb, this divine number confirmed in the book of Revelation.
2 Peter wont help either to support Paul's writings as 'scripture' since it was not written by Peter and is pseudographical. Paul's
letters are just that,...they were never intended to be worshipped as the infallible word of God.
I'm just recognizing with many others that there are problems with Paul, as far as his commitment to the original apostles of Jesus and how far he veered from them in his own gospel teaching. On that note with more research, I find it unreasonable then to prematurely or presumptuously exalt Paul unduly as some sole salvation-giver, just because the NT canon has placed so many epistles
ascribed to him (some are pseudographical however) into the collection. At best IMO, Paul is a universal mystic/gnostic type, who by his own inventions formed his own gospel mythos with its own terms, symbols and meanings. Most of these are allegorically interpreted, and at least,....its all a gnostically based system that must be 'spiritually discerned'. One must have the Spirt of Christ to be
'in Christ' (note his 'code word'), so its all based on a subjective spiritual experience and process of transformation in 'Christ', 'Christ' being formed in you (the hope of glory), having an experience with-in Christ in death, burial, resurrection and ascension (all in some spiritual unity), to be born anew as a son of God (one body of Christ ascended), all these being 'figurative' to the inner psychology and spiritual regeneration of the soul.
This is just the tip of the iceberg. Its further complicated how a branch of Gentile Christians could be its own group from the Jewish followers of Jesus and given only a few rules and prohibitions, which are further modified by Paul in his teaching confusing matters more as Christianity began to grow and evolve in its various forms. The Jerusalem Council seems to have hardly resolved anything, as the Jerusalem Community faded out with the dissolving and take over of Jerusalem, so that Gentile Christainity mostly riding on Paul's gospel-tails gained the ascendency.