Pauls quote above shows that Christian traditions should be held.
Paul is dead. I cannot hear it from him by mouth. I will hear it from him by letter. I choose the Word of God over the commandments of men.
Yet it was the Catholic Church that tells us which scripture was inspired by God. You accept that even though it is a Tradition of men passed down from the Apostles to disciples and others over centuries.
So you accept the Word of God in the Bible AND you accept the Word of God passed down by commandments of men in the form of Its Table of Contents?
Without Paul... you’re going to have a very thin Bible.