THE SOLEMNITY OF THE MOST HOLY BODY AND BLOOD OF CHRIST

According to a Pew Survey in 2019, about six-in-ten (63%) of the most observant Catholics — those who attend Mass at least once a week — accept the church's teaching about transubstantiation. This is a central belief of our faith and separates us from many other Christian believers.
Please click on the links at the end of each reference below to learn more about Corpus Christi. 
 
Bishop Robert Barron in his weekly podcast, talks about Christ serving as the High Priest by sacrificing himself and giving his life (blood).  Link https://www.wordonfire.org/resources/homily/the-lifeblood-of-god/31367/
In the Vatican News, Fr. Antony Kadavil reflects and comments on the readings for the feast of the Most Holy Body and Blood of Christ. He says that the emphasis is on the Eucharist as the sign of the covenant. Link https://www.vaticannews.va/en/church/news/2018-05/sunday-reflections-3-june-2018.html

The Catholic Culture website provides some history and symbolism. Learn why the chalice is shown with a hexagonal base, among other things.
Link https://www.catholicculture.org/culture/liturgicalyear/calendar/day.cfm?date=2021-06-06

The New Advent website hosts and encyclopedia of many items, including Corpus Christi. It includes some history about how the feast started in the Middle Ages.
Link https://www.newadvent.org/cathen/04390b.htm