Mark 14:68
But he denied [it], saying, "I neither know nor understand what you mean!" And he went out into the gateway, and a rooster crowed.
Matthew 26:71-72
And [when he] went out to the gateway, another [female slave] saw him and said to those [who were] there, "This man was with Jesus the Nazarene."
Mark 14:29-31
But Peter said to him, "Even if they all fall away, certainly I will not!"
Mark 14:72
And immediately a rooster crowed for the second time. And Peter remembered the statement, how Jesus had said to him, "Before the rooster crows twice, you will deny me three times," and throwing himself down, he began to weep.
John 13:36-38
Simon Peter said to him, "Lord, where are you going?" Jesus replied, "Where I am going you cannot follow me now, but you will follow later."
2 Timothy 2:12-13
if we endure, we will also reign with [him]; if we deny [him], he also will deny us;