I believe their faith was in the gospel of God (Romans 1:1-4 KJV), which is the WHO of Jesus Christ and God raising Him from the dead.
Isn't that what you call the "kingdom gospel"?
According to you, only Christ Jesus and the 12 (and Paul at certain times) preached the "kingdom gospel".
Let's look at one of your posts:
the gospel of God highlighted above is: Romans 1:1-4 KJV. It is the WHO of Jesus Christ and that God raised Him from the dead. Both Peter and Paul preached the gospel of God :duh:.
According to Peter to all the house of Israel this is why Christ was raised from the dead (Acts 2:30 KJV).
According to Paul to the Body of Christ this is why Christ was raised from the dead (Romans 4:25 KJV).
That's DIFFERENT!
Peter NEVER preached the gospel of Christ in Acts 2,3,4,5,...10 as the power of God unto salvation to every one that believeth!
The gospel of Christ is more than the WHO of Jesus Christ and that God raised Him from the dead (the gospel of God)! The gospel of Christ is the WHY of the cross/ the WHAT Christ died for: "that Christ died for our sins" (1 Corinthians 15: 1-4 KJV) is a very important element in the gospel of Christ! The gospel of Christ is the gospel which Paul received and was given by revelation of Jesus Christ (Galatians 1:11-12 KJV). It was before a mystery/kept secret since the world began prior to that and the Bible tells us why (Romans 16:25-27 KJV, 1 Corinthians 2:6-8 KJV).
There is more than one gospel in the Bible!
In the above, you lay out your "two gospels"
However, in this thread, you are now claiming that Roman Proselytes first had the "kingdom gospel" preached to them, but then received Paul's "Body gospel" afterwards, and subsequently became believers in the Body of Christ.
I've no doubt that they became members of the Body of Christ
Ok, if these alleged "kingdom believers" became "Body believers", then why couldn't any of the other "kingdom believers" become "Body believers"?