Solemnity of the Most Holy Body and Blood of Christ

Feast of the Corpus Christi

Solemnity of Corpus Christi. This feast is celebrated on the Thursday after Trinity Sunday. However this is a movable feast. For places that do not have the Feast of Corpus Christi as a day of obligation, it is celebrated on the Sunday after Trinity Sunday.

May our Lord Jesus Christ in the Most Blessed Sacrament be praised, adored and loved, with grateful affection, at every moment, in all the tabernacles of the world, even to the end of time!

O Sacrament most holy! O Sacrament Divine!

All praise and all thanksgiving be every moment Thine!

The indulgenced ejaculations express admirably the scope and the purpose of the present Feast, i.e. to glorify the Blessed Sacrament, and to bring souls to the feet of Jesus, the Divine Lover of souls.

Collect from the 2002 Roman Missal

Lord Jesus Christ, You gave us the Eucharist as the memorial of Your suffering and death. May our worship of this sacrament of Your Body and Blood help us to experience the salvation You won for us and the peace of the kingdom where you live with the Father and the Holy Spirit, one God, for ever and ever. Amen.

Collect from the 1962 Roman Missal

O God, who under a wonder Sacrament has left us a memorial of your passion: grant us, we beseech you, so to venerate the sacred mysteries of your Body and Blood that we may ever feel within us the fruits of your redemption. Who lives and reigns with you in the unity of the Holy Spirit, God, forever and ever. Amen.

Do you all find the collect (a.k.a opening prayer) from the 1962 Roman Missal familiar? =P

The Catechism of the Catholic Church on the Eucharist

1324 The Eucharist is "source and summit of the Christian life." "The other sacraments, and indeed all ecclesiastical ministries and works of the apostolate, are bound up with the Eucharist and are oriented toward it. For in the blessed Eucharist is contained the whole spiritual good of the Church, namely Christ himself, our Pasch."

1325 "The Eucharist is the efficacious sign and sublime cause of that communion in the divine life and that unity of the People of God by which the Church is kept in being. It is the culmination both of God's action sanctifying the world in Christ and of the worship men offer to Christ and through him to the Father in the Holy Spirit."

1326 Finally, by the Eucharistic Celebration we already unite ourselves with the heavenly liturgy and anticipate eternal life, when God will be all in all.

1327 In brief, the Eucharist is the sum and summary of our faith: "Our way of thinking is attuned to the Eucharist, and the Eucharist in turn confirms our way of thinking."

Below is the Pange Lingua, written by St. Thomas Aquinas, who was given the task of composing hymns for the celebration of Corpus Christi, by Pope Urban IV. The better known Tantum Ergo (Down in adoration falling) actually forms the last two verses of the Pange Lingua.