Mark 14:68-70

ISV(i) 68 But he denied it, saying, “I don’t know—or even understand—what you’re talking about!” Then he went out into the entryway. Just then a rooster crowed.
69 The servant girl saw him and again told those who were standing around, “This man is one of them!” 70 Again he denied it.
After a little while, the people who were standing there began to say to Peter again, “Obviously you’re one of them, because you are a Galilean!”