Matthew 26:72
And he denied [it] again, [this time] with an oath, saying, "I do not [even] know the man."
Matthew 5:34-36
But I say to you, do not take any oath, [saying] 'by heaven,' for it is God's throne;
Matthew 26:74
Then Peter began to curse and swear, "[I tell you], I do not know the man." And immediately a rooster crowed.
Luke 22:34
And Jesus said, "I tell you, Peter, you will deny [even] knowing me three times before the rooster crows today."
Acts 5:3-4
But Peter said to Ananias, "Why has Satan filled your heart [causing you] to deceive the Holy Spirit by keeping back part of the selling price of the land [while representing it as the full price]?