The Eucharist is the very sacrifice of the Body and Blood of the Lord Jesus which he instituted to perpetuate the sacrifice of the cross throughout the ages until his return in glory. Thus he entrusted to his Church this memorial of his death and Resurrection. It is a sign of unity, a bond of charity, a paschal banquet, in which Christ is consumed, the mind is filled with grace, and a pledge of future glory is given to us.
Jesus instituted the Eucharist on Holy Thursday “the night on which he was betrayed” (1 Corinthians 11:23), as he celebrated the Last Supper with his apostles.
After he had gathered with his apostles in the Cenacle, Jesus took bread in his hands. He broke it and gave it to them saying, “Take this and eat it, all of you; this is my Body which will be given up for you”. Then, he took the cup of wine in his hands and said, “Take this and drink of this, all of you. This is the cup of my Blood, the Blood of the new and everlasting covenant. It will be shed for you and for all so that sins may be forgive. Do this in memory of me”. (Compendium of the Catechism of the Catholic Church, 271-273). See more