וְעָבַ֛ר אֶל־כֶּ֥תֶף מוּל־הָֽעֲרָבָ֖ה צָפ֑וֹנָה וְיָרַ֖ד הָעֲרָבָֽתָה׃
And it passed along to the side over against the Arabah northward, and went down unto the Arabah.
Read halakhic rulings (Jewish law) on Joshua 18:18: and classical halakhic sources.