Theodoret of Cyrus
He says, you are aware that our ancestors, as they journeyed through the wilderness and arrived in this land, adhered to Your commandments and did not cause any harm to the Edomites, the Ammonites, or the Moabites.
Now therefore behold the children of Ammon, and of Moab, and mount Seir, through whose lands thou didst not allow Israel to pass, when they came out of Egypt, but they turned aside from them, and slew them not,
וְעַתָּ֡ה הִנֵּה֩ בְנֵֽי־עַמּ֨וֹן וּמוֹאָ֜ב וְהַר־שֵׂעִ֗יר אֲ֠שֶׁר לֹֽא־נָתַ֤תָּה לְיִשְׂרָאֵל֙ לָב֣וֹא בָהֶ֔ם בְּבֹאָ֖ם מֵאֶ֣רֶץ מִצְרָ֑יִם כִּ֛י סָ֥רוּ מֵעֲלֵיהֶ֖ם וְלֹ֥א הִשְׁמִידֽוּם׃
One Church Father comments on this verse
He says, you are aware that our ancestors, as they journeyed through the wilderness and arrived in this land, adhered to Your commandments and did not cause any harm to the Edomites, the Ammonites, or the Moabites.
Passages read together with this verse.