Wow!! That really doesn’t make much of an argument against Sola Scriptura. If that’s all you have, I’d rethink my position.
OK, tell me how Paul knew that 500 people saw Christ after his resurrection. He wasn’t there. It’s not in any Gospel. So how did Paul know?
Face to face communication, of course. Holy Tradition is what it is called.
“...not much of an argument against Sola Scriptura...”
Sola Scriptura is a manmade doctine. The canon of the bible is not found within the bible or listed within the bible so it is extrabiblical.
“...Wow!! that really doesn’t make much of an argument against Sola Scriptura...”
Sola Scriptura is a man made tradition not found in the bible. Where does the bible list its own canon? It does not.
The Alexandrian Canon used by Jesus includes the deuterocanonical books rejected by protestants. This canon is referred to by Jesus Himself in the New Testament.
The false argument that the “extra” Alexandrian canon books were only found in the Greek and not the Hebrew or Aramaic was discredited when the Dead Sea Scrolls were found and all of the books except Esther (including Maccabbees that speaks of purgatory) were found in the ancient languages.
The Jewish people did not settle their canon until after Jesus. They rejected the biblical books used by the early church (Alexandrian canon) after they had also rejected Jesus, so thier judgment is no longer valid at that point; Jesus did use the Alexandrian canon and his judgment is valid. Since Jesus used it, it is good enough for the Catholic Church.