That doesn’t mean it wasn’t the same gospel. It just means the 12 were woefully stuck in their old ways, which wasn’t a detriment at first, since they were doing the Jerusalem, Judea, Samaria part of their commission. They had trouble moving on to the “ends of the earth” part. And that would mean, obviously, that they DID know about the grace of God toward their Gentiles, but they didn’t know what it would look like.
That is, quite frankly, ridiculous.
The twelve were preaching the gospel of the kingdom for YEARS and YET they did not even know that Christ would die.
Can the gospel of the grace of God be preached without the death, burial and resurrection? NO!!
Hence, they CANNOT be the same gospels. End of story.
Good. Thanks for the clarification. So that part of your two gospels is the same?
Those are not "part of the two gospels". They are general principles that pre-date an gospel.
Which also is obvious, based on Rom 11 and others. But couldn’t their be people that were both of Israel and the BOC? Like Paul, Timothy, Barnabas, Silas?
Of course. But if they are part of the body of Christ, they do not have a place in the earthly kingdom where there is a distinction between Jew and gentile.
Why is that such good news on a parallel with the gospel of grace?
Who said such a thing? Not me.
You seem to think that all "good news" has the be the same good news or on the same level as every other good news.... that's just not true.