If God had wanted us to add to His revealed Word, He would not have included such dire, catastrophic warnings against doing so.
If Jesus had intended for Rome to replace Jerusalem as a physical place central to worship, He would have answered the Samaritan woman entirely differently than He did.
These are Biblical facts. Throwing out a couple of Latin words doesn’t change them.
Blessings to you.
That’s just it. Nothing was “added”. It is all part of Divine Revelation.
Blessings to you as well.