שופטים, פרק י״ב, פסוק ו׳

A tragic low point emerges in the civil war between the men of Gilead and the tribe of Ephraim. Following a battlefield victory, the Gileadites set up checkpoints at the crossings of the Jordan River. They employed a simple yet deadly pronunciation test to identify fleeing Ephraimites attempting to return to their land, a tactic that ultimately led to the mass slaughter of forty-two thousand men [ביאור שטיינזלץ].

The chosen password for this test described the flowing and rushing of water [רש״י, מצודת ציון]. The guards at the checkpoints demanded that anyone wishing to pass state that they wanted to cross the river's current [מצודת דוד]. While any word containing an "sh" sound could have been used to test the travelers, this precise term was selected because it perfectly matched the immediate physical setting of crossing a river [רד״ק].

The primary approach among commentators is that the people of Ephraim had a distinct accent and struggled to produce the required "sh" sound, pronouncing it instead like a simple "s". Some suggest that this linguistic variation was a natural result of the specific climate and air of their home region, which shaped their speech patterns much like a foreign accent [רד״ק]. Because of this regional difference, the Ephraimites stuttered [רש״י] and were physically unable to direct their speech to form the correct sound [מצודת דוד, ביאור שטיינזלץ]. Their speech simply lacked the proper direction to be spoken accurately [מצודת ציון].

However, another perspective suggests that the Ephraimites were indeed capable of pronouncing the sound correctly, provided they had the time to concentrate and make a deliberate effort. To counter this, the Gileadites intentionally pressured them to speak immediately and without delay. Under this intense pressure and lacking the time to properly prepare their speech, the fleeing men naturally reverted to their regional habit and blurted out the incorrect pronunciation [חומת אנך]. This immediate failure instantly exposed their true identity, leading directly to their capture and execution on the spot [מצודת דוד].