I was thinking of an old song by Keith Green this morning: Grace by Which I Stand. It was written after Keith had been a Christian for many years and in many ways it shares some aspects of a 'Stage 4' experience of faith. Here are the lyrics:
Lord, the feelings are not the same, I guess I'm older, I guess I've changed. And how I wish it had been explained, that as you're growing you must remember, That nothing lasts, except the grace of God, by which I stand, in Jesus. I know that I would surely fall away, except for grace, by which I'm saved.
Lord, I remember that special way, I vowed to serve you, when it was brand new. But like Peter, I can't even watch and pray, one hour with you, And I bet, I could deny you too. But nothing lasts, except the grace of God, by which I stand, in Jesus. I'm sure that my whole life would waste away, except for grace, by which I'm saved.
Wow, how true is that ... it's all by God's grace, not by our goodness or efforts in any way at all.