In a lesser sense this feast commemorates the excavation by which Helena,
the mother of Emperor Constantine dug int the Holy Sepulcher, unearthing
the true cross that had bee buried there three centuries before.
In a more important way, this feast celebrates the willing humiliation of
himself that Paul celebrated in Chapter Two of his Letter to the people
of Phillipi. There it is a plea with us that we "Have in mind with us that
mind that was also in Christ Jesus.