Quote:
it seems to me that is proof what they experienced was true.


Doug, the reasoning used is called Appeal to Belief. It is a fallacy.

The majority claims that "y" is true; therfore "y" is true.

Restated with the concept that you used:

"The disciples believed 100% what they stated about Jesus was true, therefore their statements were true."

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A majority of people followed Rev. Jim Jones and a majority commited mass suicide, does this make what Rev. Jim Jones promoted as true?

A large portion of Knights Templars were burned at the stake, does this make all of their actions, policies, and activities as "truths"?

Joan of Arc followed her beliefs and convictions. Charles VII supported her. She was executed. Does this make the visions and voices that she heard true?

Food for thought.

Shalom,
Gretta