[Just mythoughts]

What does "Mystical Body" mean?

How does one jump from the "prime minister" of the House of David to the holder of those keys. There is another place which specifically says who is the holder of those keys via the House of David.

Now the website you provided could not and did not attribute scripturally the status and stature assigned to Mary. It says that tradition and the "Spirit" was where the teaching of Mary's physical condition stemmed.

[Frank Sheed]

Okay. You doubt the Tradition of the Catholic Church (note capital T). So show me the Scripture passages indicating the Canon of the Bible and the part that dictates Sola Scriptura as solely necessary for salvation?

You have a lot of looking to do.