מָחִ֤יתִי כָעָב֙ פְּשָׁעֶ֔יךָ וְכֶעָנָ֖ן חַטֹּאותֶ֑יךָ שׁוּבָ֥ה אֵלַ֖י כִּ֥י גְאַלְתִּֽיךָ׃
Rashi on Isaiah
I erased your transgressions like a thick cloud in Egypt and in the desert. Now too, return to Me.
Ibn Ezra on Isaiah
As a thick cloud, that passeth away; when the sun comes out, it is no more.