Mark 14:68
But he denied it, saying, "I do not know or understand what you are talking about." Then he went out onto the porch and the rooster crowed.
Matthew 26:71-72
And when he had gone out by the gate, another servant-girl saw him and said to those nearby, "This man also was with Jesus of Nazareth."
Mark 14:29-31
But Peter said to Him, "Although everyone else will have doubts [about you], I never will."
Mark 14:72
Immediately the rooster crowed for the second time and Peter was reminded of the words of Jesus, who had said to him, "You will deny [knowing] me three times before the rooster crows twice." And as he thought about this, he cried.
John 13:36-38
Simon Peter said to Jesus, "Lord, where are you going?" Jesus answered, "You cannot follow me where I am going now, but you will [be able to] follow later."
2 Timothy 2:12-13
If we endure [i.e., remain faithful through suffering], we will also rule with Him [i.e., both here and hereafter]. If we deny Him, He will also deny us. [See Matt. 10:33].