Mark 14:67-71

67and when she saw Peter warming himself, she looked intently at him and said, “You were with Jesus the Nazarene, too.”

68But he denied it, saying, “I neither know nor understand what you are talking about.” Then he went out [of the courtyard] to the porch, [and a rooster crowed.]

69The servant-girl saw him, and began once more to tell the bystanders, “This [man] is one of them.”

70But again he denied it. After a little while, the bystanders again said to Peter, “You are in fact one of them, for [it is clear from your accent, that] you are a Galilean, too.”

71But he began to invoke a curse [on himself] and to swear [an oath], “I do not know this man you are talking about!”