Peter Denies Jesus (John 18:15 - 27)

As Jesus predicted in John 13:21, one of his disciples will deny him. As it turns out, the disciple who will do such an act was Peter. How he foresaw this was when he told Peter, "before the rooster crows you will say three times that you do not know me." John 13:38.

So in John 18:17, 25, and 27, before Jesus' crucifixion, Peter tells a woman at the courtyard gate and the High Priest that he does not know who Jesus is.