Matthew
Matthew 26:70ESV·traditional attribution

But he denied it before them all, saying, “I do not know what you mean.”

John Calvin Reformed @genevareformer

70. But he denied before them all. This circumstance aggravates the criminality of Peter, that, in denying his Master, he did not even dread a multitude of witnesses. “Qu’il n’a point craint de renier son Maistre, mesmement en la presence d tant de tesmoins;” — “that he did not fear to deny his Master, even in the presence of so many witnesses.” And the Spirit...

John Gill Reformed Baptist @doctorgill

And when he was gone out into the porch,.... The Vulgate Latin, Arabic, and Ethiopic versions read, "the gate": and so does Munster's Hebrew Gospel; but more rightly it is rendered, "the porch": he did not attempt to go out at the door, and run away, though he could gladly have done it; but he feared to do this, lest, as this would discover him...

Albert Barnes Presbyterian @notesbybarnes

Verse 70. But he denied before them all, etc. He denied that he was a disciple; he denied that he knew Jesus; he denied (Mark) that he understood what was meant---i. e., he did not see any reason why this question was asked. All this was palpable falsehood; and Peter must have known that it was such. This is remarkable, because Peter had just before been so confident.