Sam2 – I’ve always thought that pshat in the pasuk is pashut that the malachim stand with their feet together. (Otherwise, why don’t we amputate? Yeah, that’s a little drastic, but my point is what shaychis to anything that they have one leg? Mah she’ein kein if they b’davka keep their feet together I hear why we would try to emulate them, because they are obviously doing so for a purpose.)
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