“What difference does it make”
Everything.
You base your case on ‘the scriptures’, and yet cannot determine what was contained within ‘the scriptures’.
Asking the question, “what was written” raises the very next question - what exactly was written down that he’s referring to.
I can most certainly determine what was contained in scripture. The point was that Paul taught that we, like the Bereans, are not to take the word of man but to check with what was inspired by the Holy Spirit to be written as a benchmark for the voracity of what they taught. The RCC makes the claim that what they teach is not to be checked by scripture.
>>Asking the question, what was written raises the very next question - what exactly was written down that hes referring to.<<
The inspired words of the Holy Spirit is what he was referring to. Not some myth perpetuated by some self serving organization. The inspired record which Jesus so often quoted which was preserved by God to counter the lies of Satan. We confront that same situation when debating with followers of the RCC.