Yes, you were honest, and I appreciate that... always.
Is faith and believing based on opinion of other?
Is believing that my grandad fought in WW1 based on opinions of others? No.
It is not an opinion. It's a stated truth, or fact, which I can investigate, if I see the need to, but why do so, if I have a reliable source?
Even if one refers to it as an opinion, it's an objective opinion, and a primary source. It may be backed up by secondary sources as well, and other eyewitnesses.
I believe we have enough secondary sources backing up the primary sources, which are stated truths, or facts, to be convinced, not based on opinion, but evidence of credibility.
What do you think?