Matthew 26:72

Again he denied it, and even swore, "I do not know the man!"

Matthew 5:34-36

But I tell you not to swear at all, either by heaven, for it is God's throne,

Matthew 26:74

Then he commenced cursing and swearing, "I do not know the man!" And at once a cock crowed.

Luke 22:34

But He said, "I tell you, Peter, the cock will not crow today before you deny three times that you know me!"

Acts 5:3-4

And Peter said, "Ananias, why has Satan so completely possessed your heart that you have lied to the Holy Spirit and kept back for yourselves a part of the money received for the land?

Treasury of Scripture Knowledge

Summary

And again he denied with an oath, I do not know the man.

Bible References

With

Matthew 5:34
But I tell you not to swear at all, either by heaven, for it is God's throne,
Acts 5:3
And Peter said, "Ananias, why has Satan so completely possessed your heart that you have lied to the Holy Spirit and kept back for yourselves a part of the money received for the land?

I do not

Matthew 26:74
Then he commenced cursing and swearing, "I do not know the man!" And at once a cock crowed.
Luke 22:34
But He said, "I tell you, Peter, the cock will not crow today before you deny three times that you know me!"