עַתָּ֗ה קֻ֛מוּ וְעִבְר֥וּ לָכֶ֖ם אֶת־נַ֣חַל זָ֑רֶד וַֽנַּעֲבֹ֖ר אֶת־נַ֥חַל זָֽרֶד׃
“Ngayon, tumindig kayo at tumawid sa batis ng Zered.” Kaya tumawid kami sa batis ng Zered.
Sforno
עתה קומו, seeing that it is forbidden to you to cross territory belonging to either the Moabites or the Edomites, קומו ועברו לכם את נחל זרד, which is outside the territory of either one of these nations. From that point you will be able to advance as far as the Jordan.