The first of my promised “fireworks” did not at first bring the response I anticipated! Perhaps eventually it did.
(1) Mistaken religious faiths appeal to the wrong basis of authority.
I asserted that the Bible itself states that it is the ultimate and final authority, and I gave as my answer to the question, “Where in the Bible does it teach we must go by the Bible alone?” the reference to Isaiah 8:20.
Isa 8:20 To the law and to the testimony: if they speak not according to this word, it is because there is no light in them. (KJV, King James Version)
There are some individuals, some churches, some religious organizations which disagree with this Bible truth. I believe they are seriously mistaken.
(2) My second example of where mistaken religions are in error is that they make exclusive claim to the truth.
I suspect that every group is wrong about something. If we are honest seekers after truth the better approach may be to learn from each other. We all can benefit from the insights others have (Proverbs 4:18). We gain when we are challenged by others who may be more informed than we are through discussion and debate regarding specific issues where we differ in our understanding of the Christian faith (Proverbs 18:17).
Pro 4:18 But the path of the just is as the shining light, that shineth more and more unto the perfect day. (KJV)
Pro 18:17 He that is first in his own cause seemeth just; but his neighbour cometh and searcheth him. (KJV)