I obviously can't speak for them, but for me, my walk with Christ is based on the knowledge that this is a relationship, not a religion. A religion to me is based on ritual, generally doesn't change things, and usually is ceremonial. My faith doesn't fall under that, since it's about relationship, it changes over time. No two things are exactly the same, I could even read the same Bible verse at two different times, and I might get different practical advice both times(Proverbs 18:6 has helped me out a few times). A modern example for me to describe it is the difference between the Declaration of Independence and the Constitution. The former hasn't changed since Jefferson wrote it, whereas the latter is still being amended from time to time. It's a living document, as it were.