Judges 12:6 NIrV

[6] Then they would say, “All right. Say ‘Shibboleth.’ ” If he said “Sibboleth,” the way he said the word would give him away. He couldn’t say it correctly. So they would grab him. Then they would kill him at one of the places where people go across the Jordan. At that time, 42,000 men of Ephraim were killed.