St Luke 22:31-38

And the Lord said: Simon, Simon, behold Satan hath desired to have you, that he may sift you as wheat: But I have prayed for thee, that thy faith fail not: and thou, being once converted, confirm thy brethren. Who said to him: Lord, I am ready to go with thee, both into prison, and to death. And he said: I say to thee, Peter, the cock shall not crow this day, till thou thrice deniest that thou knowest me. And he said to them: When I sent you without purse, and scrip, and shoes, did you want anything? But they said: Nothing. Then said he unto them: But now he that hath a purse, let him take it, and likewise a scrip; and he that hath not, let him sell his coat, and buy a sword. For I say to you, that this that is written must yet be fulfilled in me: And with the wicked was he reckoned. For the things concerning me have an end. But they said: Lord, behold here are two swords. And he said to them, It is enough.