You will never go so far that God can not redeem and save you. In the parable of the lost sheep, Jesus is telling us that we can't go anywhere where He can't find and pursue us. In Romans 8 we learn that we can't be separated from His love!
Faith is seeing light with your heart when all your eyes see is darkness! In the book, Arbeely tells Armhad that "faith is believing in something even without proof, because you know it in your heart to be true.