וְהָיָה־שָׁ֞ם מַסְל֣וּל וָדֶ֗רֶךְ וְדֶ֤רֶךְ הַקֹּ֙דֶשׁ֙ יִקָּ֣רֵא לָ֔הּ לֹֽא־יַעַבְרֶ֥נּוּ טָמֵ֖א וְהוּא־לָ֑מוֹ הֹלֵ֥ךְ דֶּ֛רֶךְ וֶאֱוִילִ֖ים לֹ֥א יִתְעֽוּ׃
And a highway shall be there, and a way, And it shall be called The way of holiness; The unclean shall not pass over it; but it shall be for those; The wayfaring men, yea fools, shall not err therein.
Ibn Ezra on Isaiah
And an highway shall be there, etc. Although the rivers shall swell, still there will be a pathway, etc.8The abundance of water everywhere will be a blessing and comfort, not an obstacle stopping their way to their land and the holy city. מסלול An highway.
Rashi on Isaiah
no unclean one shall traverse it No unclean one shall traverse that road; i.e., it will no longer belong to the heathens ([mss.:] nations).