You seem to have the notion that Peter stopped believing what he believed and that which he was commanded and committed to preach. I don't see that in scripture. It's been a false premise to most of your questions on this thread and may be why some of your questions are not being fielded.
LoneStar's premise is that Peter did believe, and not that Peter stopped believing.
LoneStar said:
assuming Peter believed both
Peter believed his gospel which was for inclusion into the kingdom.
Later, Peter believed Paul's gospel which was for inclusion into the BOC.
It doesn't even have to be about Peter, but any Jew that first believed Peter's gospel when they heard it., and then believed Paul's gospel when they heard it.
A Jew is present at Pentecost, follows the disciples and believes them completely.
He is included in the kingdom, right?
Later he hears Paul preaching his gospel and believes it completely.
Will he be included in the BOC?
That's what he is looking for clarification on.
It's not an unanswerable question, if one understands the question correctly.
BTW, LoneStar is my eldest son.
I live in his household.
He has requested that I lay low, so to speak, to see if he arrives with the same conclusion that MADists do with the info they provide.
So I told him he should come here to this forum and ask, as there are many knowledgeable MADists here.
His confusion lies with the fact that he has seen MADists say that believing Paul's gospel automatically places you in the BOC.
So if Peter believed Paul's gospel ......... the natural assumption is that Peter was in the BOC (
IF is is absolutely true that when one believes Paul's gospel, they are in the BOC).