Do you ever feel like your courage and faith has fallen? Look at Matt:14:22-33. It is between 3 and 6 A.M. Jesus comes walking on water toward the disciples in a boat. They were terrified. "It's a ghost". He says,"courage! It is I! Do not be afraid".
Peter calls out, "Lord if it is you, tell me to come to you across the water." Then as Peter starts to walk across the water his faith quickly deteriorates into terror. Peter was the rock on which Jesus built the church but he sank like a stone. Says Brennan Manning.
Paul says he boast in nothing but Jesus. We all sink at one time or another.