[ShadowAce]

My problem with the “Protestant” “faith-only” is that it means people can glibly fly in the face of God even while professing to “believe” and even “love” Him.

Uh, no. It's does not.

One lives his faith. Everyone does. If you stumble, it's because your faith stumbles. If you "glibly fly in the face of God," then you do not have the faith that saves.

[Wyrd bið ful aræd]

Which leads to comparisons to the “No True Scotsman” bit. Everyone stumbles, so everyone’s faith stumbles. Thus nobody has assurance.