Matthew 26:72

and he denied a second time, and that with an oath, saying, I know not the man. And a little after, they that stood by came to Peter and said,

Matthew 5:34-36

but I say unto you, swear not at all; neither by heaven, for it is the throne of God;

Matthew 26:74

then he began to curse and to swear, saying, I know not the man. And immediately the cock crew.

Luke 22:34

But He replied, I tell thee, Peter, the cock shall not crow this day, before thou hast thrice denied that thou knowest me.

Acts 5:3-4

But Peter said, Ananias, why hath Satan so filled thine heart, that thou shouldst lie to the holy Ghost, and keep back part of the price of 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 say unto you, swear not at all; neither by heaven, for it is the throne of God;
Acts 5:3
But Peter said, Ananias, why hath Satan so filled thine heart, that thou shouldst lie to the holy Ghost, and keep back part of the price of the land?

I do not

Matthew 26:74
then he began to curse and to swear, saying, I know not the man. And immediately the cock crew.
Luke 22:34
But He replied, I tell thee, Peter, the cock shall not crow this day, before thou hast thrice denied that thou knowest me.