I took the liberty of changing the title of this thread from my earlier question as to what Yorrie Richards was saying.
Know-Him cleared this up for me.
I've thought about this for a long time. My own thought is that they veil their faces in deep humility. They veil their faces (Isa. 6.2) so as not to draw attention to themselves. Their whole interest-- the very reason they were created, actually--is to protect and guard the glory of the Lord. They themselves are glorious creatures, yet it would be unthinkable to them to display and seek their own glory (as Lucifer did). So they veil their own faces, and call one and all to behold the glory of the Lord. "Holy, holy, holy, is the LORD of hosts; the whole earth is filled with His glory."
...And their feet. They veil their feet. HE is the one with the beautiful feet (Isa. 52.7). They don't draw attention to their own walk, they are not trying to catch the eyes of man, like the daughters of Zion did, "walking, and mincing as they go, and making a tinkling with their feet..." (Isa. 3.16).
And the wings, I would say, speak of a spiritual, a heavenly, provision. Wings are for the heavens. "With twain they did fly." The seraphim-- fiery ones-- live and walk in the Spirit. And with the power of the Spirit, they veil themselves in such a way as to cause all attention to be drawn, not to themselves, but to the Lord.
Are we to seek anything less ourselves, who are called to reveal the glory of the Lord in all His fulness?
...But I wonder if the Lord has revealed anything to others about this. Why do the seraphim veil their faces? And their feet?