A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another. — John 13:34

Mamacita says:  The semicolon is important here; it separates two distinctly complete sentences that have a connection to each other.  The new commandment is that we love one another.  The second sentence instructs us that we love one another as He has loved us.

Maundy: The ceremony of washing another’s feet

In hot desert countries, barefoot or sandal-wearing people always had absolutely filthy feet.  To wash feet like that was considered a humble, mundane, pretty nasty task.  It also personifies sacrificial love and hospitality.