NET

6 then they said to him, “Say ‘Shibboleth!’” If he said, “Sibboleth” (and could not pronounce the word correctly), they grabbed him and executed him right there at the fords of the Jordan. On that day 42,000 Ephraimites fell dead.

Darby

6 Then they said to him, Say now Shibboleth! and he said, Sibboleth, and did not manage to pronounce [it] rightly. Then they took him, and slaughtered him at the fords of the Jordan. And there fell at that time of Ephraim forty-two thousand.

KJV

6 Then said they unto him, Say now Shibboleth: and he said Sibboleth: for he could not frame to pronounce [it] right. Then they took him, and slew him at the passages of Jordan: and there fell at that time of the Ephraimites forty and two thousand.