Matthew 26:73

After a little while those who stood by came and said to Peter, "Surely you are also one of them, for your speech makes you known."

Judges 12:6

then they said to him, "Now say 'Shibboleth;'" and he said "Sibboleth"; for he couldn't manage to pronounce it right: then they seized him, and killed him at the fords of the Jordan. There fell at that time of Ephraim forty-two thousand.

Nehemiah 13:24

and their children spoke half in the speech of Ashdod, and could not speak in the Jews' language, but according to the language of each people.

Luke 22:59-60

After about one hour passed, another confidently affirmed, saying, "Truly this man also was with him, for he is a Galilean."

John 18:26-27

One of the servants of the high priest, being a relative of him whose ear Peter had cut off, said, "Did I not see you in the garden with him?"

Treasury of Scripture Knowledge

Summary

And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee.

General references

Bible References

Surely

Luke 22:59
After about one hour passed, another confidently affirmed, saying, "Truly this man also was with him, for he is a Galilean."
John 18:26
One of the servants of the high priest, being a relative of him whose ear Peter had cut off, said, "Did I not see you in the garden with him?"

For

Judges 12:6
then they said to him, "Now say 'Shibboleth;'" and he said "Sibboleth"; for he couldn't manage to pronounce it right: then they seized him, and killed him at the fords of the Jordan. There fell at that time of Ephraim forty-two thousand.
Nehemiah 13:24
and their children spoke half in the speech of Ashdod, and could not speak in the Jews' language, but according to the language of each people.

General references

Proverbs 25:26
Like a muddied spring, and a polluted well, so is a righteous man who gives way before the wicked.