Judges 12:5-6
Judges 12:5-6 NIVUK
The Gileadites captured the fords of the Jordan leading to Ephraim, and whenever a survivor of Ephraim said, ‘Let me cross over,’ the men of Gilead asked him, ‘Are you an Ephraimite?’ If he replied, ‘No,’ they said, ‘All right, say “Shibboleth”.’ If he said, ‘Sibboleth’, because he could not pronounce the word correctly, they seized him and killed him at the fords of the Jordan. Forty-two thousand Ephraimites were killed at that time.