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Territory of Ephraim
5Now this was the territory of the sons of Ephraim according to their families: the border of their inheritance eastward was Ataroth-addar, as far as upper Beth-horon. 6Then the border went westward at Michmethath on the north, and the border turned eastward to Taanath-shiloh and continued beyond it to the east of Janoah. 7Then it went down from Janoah to Ataroth and to Naarah, then reached Jericho and came out at the Jordan. 8From Tappuah the border continued westward to the brook of Kanah, and it ended at the sea. This is the inheritance of the tribe of the sons of Ephraim according to their families,
Joshua 16:5-8 (NASB)