Specifically:
Thou preparest a table before me in the presence of mine enemies: thou anointest my head with oil; my cup runneth over.
What does it mean?
I was watching some travesty of a version of The Lord's My Shepherd on Songs of Praise (Gordon Brown was on it), which led me on to how lovely that piece of writing is, which led me to realising I have no idea what those lines are about. Why a table in the presence of enemies? Anointing - blessing? Cup running over - does it mean "I have everything I need and more"? Or was there originally a more practical meaning?
Bear in mind I'm an agnostic, with sketchy biblical knowledge.