Career
He was known for emphasizing the Christian"s status as a child of God, a view known as sonship theology. Tullian Tchividjian notes that Miller summed up the gospel in this way: "Cheer up. You"re a lot worse off than you think you are, but in Jesus you"re far more loved than you could have ever imagined."
Gary North argues that Miller was "deeply affected by the counter-culture", and this led him to adopt new, people-oriented approaches to evangelism.
Chad B. Van Dixhoorn suggests that Miller"s Sonship program stemmed from three and a half months spent in Spain overlooking the Mediterranean Sea.
Miller "studied the promises of Scripture for three and a half months culminating in a mountaintop experience, or its seaside equivalent. He returned to America with two things on his mind, adoption and revival."
Miller wrote a number of books, most notably Outgrowing the Ingrown Church (1986).
A volume of his letters, The Heart of a Servant Leader, was published in 2004.