Through reading, Foxe: Voices of the Martyrs, I have been challenged in my own faith in multiple ways. One major way would be the necessity of knowing and being in the Word. It's our life source!
Here's what some are saying about it:
"FOXE: Voices of the Martyrs is the one book none of us want to be in, but it's
the one book which should be in the hands of every Christian, and chained to
every pulpit." ~Ray Comfort
Check this link out and buy the book!