What the church teaches about this, yes is Tradition, which is one of the three equal pillars on which the Church stands - Magisterium or the teaching arm, Scripture of which books are included was decided at the Council of Carthage in 400 something A.D. (with Sts. Augustine and Jerome getting into one nasty argument that was settled by the bishop of Rome at the time), and Tradition with a capital T - that which has always been taught and is not in scripture. Just because a given teaching is not in scripture doesn't make it false. There are a lot of things that are taught that are Tradition which have been documented by the church doctors from the very beginning. Not that a lack of evidence can prove something to be true, but there is also the matter that no grave has ever been said to exist for the Blessed Mother. It was always said that St. Peter was buried beneath the altar of St. Peters, but that was not excavated until the 1940's - and yes, there he is.
I know this isn't going to convince people, but this is what is. Not everything that was given to us by the Father through the Son is in scripture. Scripture even says that.
UNBELIEVABLY OUTRAGEOUS
that anything
—particularly a collection of self-serving political RELIGIOUS bureaucrats
could EVER be
EQUATED
with Scripture—particularly by ANYONE calling themselves Christians.
That's NOT what God's written word says...You are making that up...
And God's word does NOT give someone in your church any authority to add to or remove from the words of God and call it Tradition...