A story of how a certain one escaped one of the snares of the devil through humility.
The devil once appeared to a certain brother transformed into the likeness of an angel of light. He said, " I am the angel Gabriel, and I am sent unto thee." The brother, though he doubted not at first but that he saw an angel, yet out of his humility made answer, "Surely you are sent to some other one and not to me, for I am altogether unworthy to have an angel visitor." Then the devil, being astonished and baffled, departed from him.
Reference: http://www.archive.org/details/wisdomofdesert00birmrich