Commentary for Nehemiah 9:19

וְאַתָּה֙ בְּרַחֲמֶ֣יךָ הָֽרַבִּ֔ים לֹ֥א עֲזַבְתָּ֖ם בַּמִּדְבָּ֑ר אֶת־עַמּ֣וּד הֶ֠עָנָן לֹא־סָ֨ר מֵעֲלֵיהֶ֤ם בְּיוֹמָם֙ לְהַנְחֹתָ֣ם בְּהַדֶּ֔רֶךְ וְאֶת־עַמּ֨וּד הָאֵ֤שׁ בְּלַ֙יְלָה֙ לְהָאִ֣יר לָהֶ֔ם וְאֶת־הַדֶּ֖רֶךְ אֲשֶׁ֥ר יֵֽלְכוּ־בָֽהּ׃

yet Thou in Thy manifold mercies forsookest them not in the wilderness; the pillar of cloud departed not from over them by day, to lead them in the way; neither the pillar of fire by night, to show them light, and the way wherein they should go.

Rashi on Nehemiah