Otoharo!
I am not sure I grasp your meaning. Questioning what? Is God real? YEs, I've no question there. Is my history told to me, not remembered, real? I'm sure it is because I trust those who told me, but I do not remember it. So there are things I know because I know them, and things I know because I trust those who told me so.
Is this the questions you mean?
finaltiy