Roman Catechism 40.6

Chapter 40 — Part IV: Prayer — The Sixth Petition: Lead Us Not into Temptation

Section 6. What more striking example can there be of human infirmity, than the holy band of the Apostles, who, though they had just before felt very courageous, at the first sight of danger, abandoned the Saviour and fled. A still more conspicuous example is the conduct of the Prince of the Apostles. He who a short time before loudly protested his courage and special loyalty to Christ the Lord, he who had been so confident in himself as to say, Though I should die with thee, I will not deny thee, became so affrighted at the voice of a poor maid-servant that he declared at once with an oath that he knew not the Lord. Doubtless his courage was not equal to his good-will. But if, by the frailty of human nature in which they confided, even the Saints have sinned grievously, what have not others to fear, who are so far below them in holiness?