Here's a song to express the idea of today. We sang it at Regional Honor Choir and it was my favorite one we did.
Words (by St. Thomas Aquinas):
O sacrum convivium, in quo Christus sumitur;
recolitur memoria passionis ejus;
mens impletur gratia;
et futurae gloriae nobis pignus datur.
O sacred banquet, wherein Christ is received;
the memorial of his passion is renewed;
the soul is filled with grace;
and a pledge of future glory is given to us.