Judges 12:1-6

1 Then the people of Ephraim mobilized an army and crossed over the Jordan River to Zaphon. They sent this message to Jephthah: “Why didn’t you call for us to help you fight against the Ammonites? We are going to burn down your house with you in it!”
2 Jephthah replied, “I summoned you at the beginning of the dispute, but you refused to come! You failed to help us in our struggle against Ammon.
3 So when I realized you weren’t coming, I risked my life and went to battle without you, and the LORD gave me victory over the Ammonites. So why have you now come to fight me?”
4 The people of Ephraim responded, “You men of Gilead are nothing more than fugitives from Ephraim and Manasseh.” So Jephthah gathered all the men of Gilead and attacked the men of Ephraim and defeated them.
5 Jephthah captured the shallow crossings of the Jordan River, and whenever a fugitive from Ephraim tried to go back across, the men of Gilead would challenge him. “Are you a member of the tribe of Ephraim?” they would ask. If the man said, “No, I’m not,”
6 they would tell him to say “Shibboleth.” If he was from Ephraim, he would say “Sibboleth,” because people from Ephraim cannot pronounce the word correctly. Then they would take him and kill him at the shallow crossings of the Jordan. In all, 42,000 Ephraimites were killed at that time.
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