Mark 14:69-72

69 And the servant girl saw him and began again to say to the bystanders, “This man is one of them.” 70 But again he denied it. And after a little while the bystanders again said to Peter, “Certainly you are one of them, for you are a Galilean.” 71 But he began to invoke a curse on himself and to swear, “I do not know this man of whom you speak.” 72 And immediately the rooster crowed a a second time. And Peter remembered how Jesus had said to him, b Before the rooster crows twice, you will c deny me three times.” And he broke down and wept.
Or  And when he had thought about it, he wept

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