Like you, I've heard this said hundreds of times about hundreds of references: any number of how-to's. Training programs, internet websites, books (there's even The Triathlete's Training Bible), magazines (remember Elle Wood referring to Cosmopolitan Magazine as "The Bible" in Legally Blonde?)
What is always meant is, the resource that's turned to, read, re-read, memorized, and followed to progress to and attain one's passionate goal. The guide. The source of answers for all possible questions. The ultimate word in how to proceed.
Wonder what people would be like, what the world would be like if everyone's Bible was....
What would I be like? I know the Bible, I've read it cover to cover as well as piecemeal (kind of like a thru-hike compared to a section-hike,) hear bits and pieces most Sundays, have a lot of verses in my memory, and I have one in the King James Version, one in the New International Version, one in French (which I can read and understand) and one in Spanish (which I can't) but I can't say I turn to any of them as often as I do to backpacking magazines, Appalachian Trail books, or Google searches for treating Achilles tendonitis, borderline blood sugar, or high cholesterol.
I'm planning to carry at least my pocket-size New Testament and Psalms on the Trail but.... humiliation here..... also pondering whether how often I'd look at it would justify the few ounces of extra weight. God, it was hard to write that. Ouch.
How would my life become different if my Bible were my Bible?
Merry Christmas, everyone.