Answer:
I am never quite what I appear to be. Straight-forward I seem, but it's only skin deep. For mystery most often lies beneath my simple speech. Sharpen your wits, open your eyes, look beyond my exteriors, read me backwards, forwards, upside down. Think and answer the question...
I pass before the sun, but make no shadow.
I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.
What has three feet but no arms or legs?
Thousands lay up gold within this house. But no man made it. Spears past counting guard this house, but no man wards it.
What begins and has no end? What is the ending of all that begins?