Matthew 26:35

26:35 Peter said to him, “Even if I must die with you, I will never deny you.” And all the disciples said the same thing.

Matthew 21:21

21:21 Jesus ¹  answered them, “I tell you the truth, ²  if you have faith and do not doubt, not only will you do what was done to the fig tree, but even if you say to this mountain, ‘Be lifted up and thrown into the sea,’ it will happen.

¹ tn Grk “And answering, Jesus said.” This is somewhat redundant and has been simplified in the translation.

² tn Grk “Truly (ἀμήν, amhn), I say to you.”