I believe it on His authority...Believing things on authority [by faith] only means believing them because you have been told them by someone you think trustworthy. Ninety‑nine percent of the things you believe are believed on authority. I believe there is such a place as
. I have not seen it myself. I could not prove by abstract reasoning that there must be such a place. I believe it because reliable people have told me so. New York
--Mere Christianity, book 2, chapter 5
It is a simple but powerful observation to recognize that we take most things on faith-- or through varying degrees of faith. The extent of the faith is a function of the knowledge available to us and our expertise in interpreting knowledge and opinion from that realm.
This is certainly true with anything historical-- whether the existence of Abraham Lincoln, the divinity of Jesus Christ, or specifics about the reconstruction of our earth's history.