A fantastic post on The Gospel Coalition Blog by Paul Tripp warning about the danger of equating theological knowledge and ministry success with spiritual maturity.
I will not pass comment here but will offer a couple of selected quotes. In respect to equating theological knowledge with spiritual maturity, he says:
There is a huge difference between knowledge and wisdom. Knowledge is an accurate understanding of truth. Wisdom is understanding and living in light of how that truth applies to the situations and relationships of your daily life. Knowledge is an exercise of your brain. Wisdom is the commitment of your heart that leads to life transformation.
In respect to equating ministry success with an endorsement by God of spiritual maturity, he says:
God has the authority and power to use whatever instruments he chooses in whatever way he chooses. Ministry success is always more a statement about God than about the people he uses for his purpose.
Do read the full post – it really is insightful.