I can't help but think many of these passages are metaphors. They are
designed to evoke emotions and derive meanings from events that occurred
in the king's life. "Face behind him" may relate to the ability of the
king to know what was happening around him even when it was at his back.
Perhaps there was even a specific story about a display of this amazing
and god-like talent on a hunting trip or when facing an enemy.

A great deal of how these are interpreted are dependent on punctuation and
capitalization. One has to wonder if there might be liberties taken here.

I suspect that each "poem" need be understood in its entirety to have
meaning and in many cases the referants are gone so it might be impossible
to ever understand them.

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Man fears the pyramid, time fears man.