רַ֛ק אֶל־אֶ֥רֶץ בְּנֵי־עַמּ֖וֹן לֹ֣א קָרָ֑בְתָּ כָּל־יַ֞ד נַ֤חַל יַבֹּק֙ וְעָרֵ֣י הָהָ֔ר וְכֹ֥ל אֲשֶׁר־צִוָּ֖ה יְהוָ֥ה אֱלֹהֵֽינוּ׃
Only to the land of the children of Ammon thou camest not near; all the side of the river Jabbok, and the cities of the hill-country, and wheresoever the LORD our God forbade us.
Read kabbalistic (mystical) interpretation of Deuteronomy 2:37: and classical mystical sources.