Perseverance is not the result of our determination, it is the result of God’s faithfulness. We survive in the way of faith not because we have extraordinary stamina but because God is righteous, because God sticks with us. Christian discipleship is a process of paying more and more attention to God’s righteousness and less and less attention to our own; finding the meaning of our lives not by probing our moods and motives and morals but by believing in God’s will and purposes; making a map of the faithfulness of God, not charting the rise and fall of our enthusiasms. It is out of such reality that we acquire perseverance.
–Eugene Peterson, “A Long Obedience in the Same Direction”, p. 133