Short answer: No. Why? Because Scriptural text can be interpreted a million different ways and so much depends on how Peter, the other Apostles, and their successors understood and applied His teachings. This is most manifest in the Holy Eucharist and the Catholic Mass. Indeed, at the very outset it was the early Church Fathers who decided on what books would be admitted as authentic Gospel and Biblical writings and what ought to be excluded.
“Short answer: No. Why? Because Scriptural text can be interpreted a million different ways and so much depends on how Peter, the other Apostles, and their successors understood and applied His teachings.”
I’m sorry, but respectfully, I have to say that is nonsense. What of those Paul talks about who were saved by faith even before Christ walked the Earth, such as Abraham, Noah, etc? They knew Christ, and the gospel such as was given to them before the NT, and even that inferior gospel was sufficient, without any need of Peter, or any apostle. So, clearly the gospel which we have now is more than sufficient for instructing us on how to obtain salvation.