Our Lord was declaring a central truth; it was Peter’s faith He was seeking to guard; for well He knew that when faith is broken down, the foundations of spiritual life give way, and the entire structure of religious experience falls. It was Peter’s faith which needed guarding. Hence Christ’s solicitude for the welfare of His disciple’s soul and His determination to fortify Peter’s faith by His own all-prevailing prayer. In his Second Epistle, Peter has this idea in mind when speaking of growth in