Matthew 26:74 escalates the denial with curses and oaths — immediately following verse 72’s oath denial.

Matthew 5:34-36 forbids swearing oaths, which Peter directly violates by denying with an oath.

Luke 22:34 records Jesus’ prediction that Peter would deny him three times — here in Matthew 26:72 that prediction begins to unfold.

Mark 14:68 gives a fuller account of the same denial, including the rooster crowing.

Luke 22:58 records the same denial with Peter saying 'Man, I am not.'

John 21:16 shows Jesus restoring Peter after his denial — a threefold affirmation contrasting the threefold denial.