Matthew 18:16
Context18:16 But if he does not listen, take one or two others with you, so that at the testimony of two or three witnesses every matter may be established. 1
Matthew 26:34
Context26:34 Jesus said to him, “I tell you the truth, 2 on this night, before the rooster crows, you will deny me three times.”
Matthew 26:75
Context26:75 Then Peter remembered what Jesus had said: “Before the rooster crows, you will deny me three times.” And he went outside and wept bitterly. 3
1 sn A quotation from Deut 19:15.
2 tn Grk “Truly (ἀμήν, amhn), I say to you.”
3 sn When Peter went out and wept bitterly it shows he really did not want to fail here and was deeply grieved that he had.