Apparently the word tradition was not a strong was to communicate because once that Apostle dies off, the variations of what he said will begin to corrupt his words.
This is only true is one disregards what God has said about His Word.
so shall my word be that goes out from my mouth;
it shall not return to me empty,
but it shall accomplish that which I purpose,
and shall succeed in the thing for which I sent it. Isa. 55:11
The bible clearly takes the front seat to be the one to impart truth.
From your point of view, I think this has to be true. Otherwise, you could not maintain your separation from the Apostolic Church.
“And God placed all things under his feet and appointed him to be head over everything for the church, 23which is his body, the fullness of him who fills everything in every way.” Eph. 1
The Church is the fullness of Him.
"But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth. " 1 Tm 3:15
The Church is the pillar and ground of the Truth. Sola Scripturists will have us believe that the Church was no longer a pillar and ground once part of that Truth was committed to writing, but it seems clear that humanity continues to need a pillar and ground of the Truth even today.
But Paul went further when he rebuked the Galatian Church and said, “If we or an angel from heaven preach any other gospel than what you have received, let him be curses.”… This is why we compare all other revelation with what we found in scripture.
Actually, you compare it to your perception of what is in Scripture. The perception is different because you have received that “other gospel” from the Reformers.
Adding any tradition is a source of truth is to add it from the bible’s silence on it.
No Sacred Tradition can be “added”. the once for all divine deposit of Truth was closed at the death of the last Apostle. Scripture is clear that only a small portion of the Kerygma is contained in the books. Since the CC received the faith from the Apostles, we have no need to extract it from the pages of the book.