Eucharist 

The Mass is our central act of worship in which the Eucharist is consecrated (changed into the Body, Blood, Soul, and Divinity of Jesus).  Mass consists of two main parts: The Liturgy of the Word, in which people hear the Scriptures read followed by a short sermon about the readings. The Liturgy of the Eucharist is when we enter into the Paschal Mystery and celebration of the Last Supper. The Lord's Supper is a memorial of the deliverance from sin He would give to those who trust in Him (Matthew 26:28).

Then he took the bread, said the blessing, broke it, and gave it to them, saying, “This is my body, which will be given for you; do this in memory of me.”
 - Luke 22:19