Many things can be mentioned yet dont actually exist. What are you trying to say?
Anyway, we all KNOW we exist. We dont need proof. You can prove to me that I don’t exist, and I’ll still know I exist.
Inasmuch as I exist, Someone had to put me here. I KNOW that too (same kind of knowledge, but fortunately theres plenty of proof.). And Who should I trust more about the truth then Him?
So yes, we can know that the truth is the truth.
(That was longwinded maybe, but I still left out a lot of the in between reasoning)