The Feast of the Exaltation of the Cross is celebrated on September 14 to honour the Holy Cross by which Christ was crucified and redeemed the world.
We adore you,
O Christ,
and we praise you.
Because by your
Holy Cross,
you have redeemed
the world.
May I never boast of anything except the Cross of the Lord, by
which the world has been crucified to me, and I to the world...
(Galatians 6.14)