קבלה אויף יחזקאל 1:23

Now, from where do we know that the wings-Knafayim-כנפיים hide and conceal? From the verse,¹⁹⁷Ezekiel 1:23 “And beneath the firmament, their wings-Kanfeihem-כנפיהם were paired one with the other; for each, two covered them on this side, and for each, two covered them on that side, [thus covering] their bodies.” That is, about both, a term of covering-Kisuy-כסוי was used. It likewise is written,¹⁹⁸Isaiah 6:2 “The Serafim angels stood above [at His service]. Each one had six wings-Knafayim-כנפים. With two it would cover its face, with two it would cover its legs, and with two it would fly.” Now, the flying-Afifah-עפיפה and the covering-Kisuy-כסוי come together, for when the Indwelling Presence of HaShem-יהו״ה (Shechinah), withdraws to above, wings are made for Her. She withdraws and the Jewish people no longer see Her, as written,¹⁹⁹Psalms 18:11 “He mounted a cherub and flew-VaYa’of-ויעף,” referring to one of the ten journeys of the Indwelling Presence of HaShem-יהו״ה (Shechinah), as stated in Tractate Rosh HaShanah.²⁰⁰Talmud Bavli, Rosh HaShanah 31a