Language: Dialects of the Jews
Source: Nav
Judges 12:6
they told him, “Please say Shibboleth.” If he said, “Sibboleth,” because he could not pronounce it correctly, they seized him and killed him at the fords of the Jordan. So at that time 42,000 Ephraimites were killed.
Matthew 26:73
After a little while, those standing nearby came up to Peter. “Surely you are one of them,” they said, “for your accent gives you away.”