To the question “Who do you say that I am?” we cannot give a merely theoretical or theological answer. What answers it, in the final analysis, is our life, our personal history, our manner of living the gospel.
Peter’s affirmation, ‘You are the Christ,’ is fundamental. But what is demanded is that we make that affirmation the guiding thought of our life — accepting all the consequences, as dire as they may be. Only so is our response valid, as honest and sincere as it may be without it.
Our response to the question, ‘Who do you say that I am?” does not end with a profession of faith or a theological systematization. It is a question addressed to our life and that of the entire church.
From Gustavo Gutierrez, We Drink from Our Own Wells: The Spiritual Journey of a People (p. 51). (H.T. Scot McKnight)