What is the difference between Christians?
Why do some grow and other do not?
Is one smarter, stronger, more intelligent, more pious, richer, etc. than the other?
Something inherently inside them has to account for the difference between the two men's free will choices.
What is it?
Why did you, ftd, use your free will to "open the door" to Christ when your neighbor used his free will to ignore His "knocking?"