A true Christian recognizes the fact that his faith in God isn't 100%, just as his knowledge about God isn't.
I wouldn't say that. I have always had faith in God, 100%. I did one time, really, truly think about
what if there wasn't a God, but my faith was never shaken.
Extremely rare event going on here, I actually agree with BADecker on his never 100% point.
Surely if faith was at 100% then it would no longer be faith, it would be proof? Maybe I'm wrong on this.
If no faith = doubt, or uncrtainty (e.g. I don't have faith in the Cubs)...
Then pure faith = lack of doubt, or certainty
To what degree this is just semantics, I don't know.
Even if it is semantics, I think there's an important point that many people seem to overlook: different understanding of the words, leading to greater misunderstandings about what they're disagreeing about.
For instance, faith sounds like a synonym for trust. (Not that that helps because 'trust' would be another word that some people have completely burnt out of their system.)
Faith: a submissive act of acknowledging or sensing
vulnerability about a greater power in our lives.
Knowledge: a comforting sense of certainty, familiarity, or empowerment, provided by some kind of recognition (e.g.: new evidence is in agreement with existing dogmas.)
A couple of others:
Trust:
"to trust someone", e.g.: having
faith that a person will be friendly in spite of a lack of evidence.
Certainty, Confidence: labels to acknowledge and describe the "thing" that is the
sense of conviction of knowing. Certainty and confidence would refer to the same
type of thing, but they differ in the degree in which they describe it.
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Edit:
Incidentally, these definitions have far-reaching implications, as it sort-of turns the tables in the religious debate.
Modern agnostics would be old-school "faithful" by acknowledging there are some things they just don't know, whereas the religious crowd would be heretical due to their moral crime of
overconfidence.