2 Samuel 18:6 Cross References - ISV

⁶ David’s army left for the battlefield to fight Absalom and his Israeli followers, and they also fought in the Ephraim forest,

¹⁵ So Joshua replied to them, “Since you’re so numerous, go up to the forest and clear ground there for yourselves in the territory where the Perizzites and Rephaim are, because the hill country of Ephraim is too narrow for you.”

¹⁸ but the hill country will also belong to you. Even though it’s a forest, you will clear it and possess it to its farthest borders. You’ll drive out the Canaanites, even though they have iron chariots and even though they’re strong.”

⁴ Then Jephthah mustered all the men of Gilead, fought the tribe of Ephraim, and defeated them, because they had been claiming, “You descendants of Gilead are fugitives in the midst of the tribes of Ephraim and Manasseh.”
⁵ Shibboleth vs. SibbolethThe descendants of Gilead seized control of the Jordan River’s fords along the border of Ephraim’s territory. Later on, when any fugitive from Ephraim asked them, “Let me cross over,” the men from Gilead would ask him, “Are you an Ephraimite?” If he said “No,” ⁶ they would order him, “Pronounce the word ‘Shibboleth’ right now.” If he said “Sibboleth,” not being able to pronounce it correctly, they would seize him and slaughter him there at the fords of the Jordan River. During those days 42,000 descendants of Ephraim died that way.