In actuality truth should be all things correct, honest, accurate and right based on solid facts, honest findings and righteousness and devoid of any doubts and falsehood.
However to prove that what one has/says/is upon is in fact true is not always easy.
Distinguishing truth from falsehood is a truly intricate and even laborious task.
And the truth is what we may have with us of what we believe is true may very well not be true...or not the complete truth.
I do do believe though that the more one seeks knowledge and enlightenment righteously, with an open mind, and humbleness then the truth of matters will become clearer to them!