It IS the same gospel but a mystery was kept from the other apostles until it was given to Paul. That mystery was that there is no effort, action, or work that man does or can do without having been saved by grace through the gift of salvation. Man cannot by doing something merit salvation. The 12 apostles had not been given the revelation of that mystery. They taught that salvation followed action.
I think we need to change the terminology used. It is not another gospel but is an understanding of how salvation is attained by man.
BTW: Paul calls this MYSTERY of the gospel "the gospel of the grace of God" (Acts 20:24); "the preaching of the cross" (1 Cor. 1:18), and "my gospel"(Rom. 2:16, 16:25) and "the gospel of the uncircumcision"(Gal. 2:7) and "that gospel I preach amongst the Gentiles"(Gal. 2:2).
An interesting tightening of the shot group. That is meant in a good way. I have to ask the following question and it is not intended as a trap.
Upon rapture of the church will those asleep who heard and responded to Peters call to salvation be translated with those who responded to Paul’s call to salvation?
Are the kingdom responders of Peter and the 11 treated as those under the old covenant?
Finally did Cornelius respond to Grace or Peter’s call to baptismal regeneration?
I ask these questions because I have reached a point where the logic of two systems within one body of believers at the same exact point in history does not measure up. To me “worlds collide” apparently in Acts 15 and all departed brothers and agreed on the Gospel.
As one who has studied dispensationalism for a few years, I note there are clear distinctions which usher in a new. The Fall, the Flood, Abraham, Mosaic, Messiah death, burial and resurrection then ushering in His church at Pentecost, Rapture ushering in Trib etc. By dividing the church into two dispensations seems to laymen me as illogical based on claims of that Paul was sole owner of the Gospel of Grace and inferring Paul was the only apostle to realize or communicate the mystery. Acts 15 to me tells it all. The gospel was for Jew and Gentile.
Thank you again for your previous post.