History is one way of getting closer to knowing something about a topic (and we know the problem with how histories are written). 

Science is another way (and we know the problem with how science is often performed and reported; science only deals with material matters, not immaterial ones).

Direct experience is another way (and we know the problem with personal memories). 

Rational inquiry is still another way (and so forth). 

All of these are means to an end, and not the end itself.

God wants us to use all these means to come to know about Him.