I. Jesus introduced the idea of the Eucharist during His public ministry, and especially in the Bread of Life discourse recorded in John 6. At the Last Supper, He then instituted the Eucharist, in the context of the Mass and the priesthood.

III. The whole of the Mass thus guides us on our pilgrimage to heaven and thus be a first taste of the prayers and celebration in heaven. See Vatican II Council, Sacrosanctum Concilium 8. We can see this effect in several ways.

IV. The Mass is divided into two main parts and two supporting parts. The main parts are the Liturgy of the Word and the Liturgy of the Eucharist. The supporting parts are the Introductory Rites and the Concluding Rites. General Instructions to the Roman Missal 28. They proceed from preparing the way for God, to guidance for the passage, to the actual presence of Christ and re-presentation of His sacrifice on Calvary, and finally a commissioning to bring His salvation into the world.

V. A couple of prayers are good to know in preparing for and giving thanks for the Eucharist

Adoro Te (I Adore You)

"Godhead here in hiding, whom I do adore

Masked by these bare shadows, shape and nothing more,

See, Lord in thy service low lies here a heart

Lost, lost all in wonder at the God thou art.

Seeing, touching, tasting are in Thee deceived;

How says trusty hearing? That shall be believed;

For what God's Son has told me, take for truth I do;

For truth Himself speaks truly or there's nothing that is true."

- St. Thomas Aquinas, quoted in the Catechism of the Catholic Church 1381

Soul of Christ, sanctify me;

Body of Christ, save me;

Blood of Christ, enrich me;

Passion of Christ, strengthen me;

O good Jesus, hear me.

In Your wounds, hide me;

Permit me never to be parted from You.

From the malignant enemy protect me.

In the hour of my death call me,

And bid me to come to you

That with Your saints, I may praise You

For ever and ever. Amen.