Two things, at least...If we can't find it in the scriptures, there's no evidence to prove that the teaching came from God...And the bible says to prove all things...The only way to prove all things is to have a standard from which to prove things...The bible, the words of God obviously have to be that standard...
And when we can read simple scripture that says 'all have sinned', we know that all have sinned, including Mary...
All have sinned except Mary is a contradiction to God's word...Your religion would have us ignore God's word and instead believe your religion has something called the 'deposit of faith' and is infallible when it comes to things like this Mary assumption thing when there is zero evidence from God's word...
Far too many of your religion's traditions are contrary to the words of God...
...If we can’t find it in the scriptures, there’s no evidence to prove that the teaching came from God...
Another odd belief.
If it is taught by the Apostles who God Appointed, that can be trusted. After all, they WROTE the Bible under His guidance. Now you want to muzzle them. For shame.
It has been my experience that far too many of your claims about Catholic traditions are contrary to the truth.
"There are not more than 100 people in the world who truly hate the Catholic Church, but there are millions who hate what they perceive to be the Catholic Church. ....As a matter of fact, if we Catholics believed all of the untruths and lies which were said against the Church, we probably would hate the Church a thousand times more than they do." - The Venerable and Most Reverend [Archbishop] Fulton John Sheen
Peace be with you.