A prayer attributed to St Thomas Aquinas:
O almighty, everlasting God, behold, I draw near to the Sacrament of your only-begotten Son, our Lord Jesus Christ.
I draw near, as a sick man to the Physician of life, as one defiled to the Fountain of mercy, as one blind to the Light of Eternal Splendor, as one poor and needy to the Lord of Heaven and Earth.
Therefore I implore you, in your infinite goodness, that you would graciously cure my sickness, wash away my defilement, give light to my blindness, enrich my poverty, and clothe my nakedness, so that I may receive the Bread of Angels, the King of Kings, and Lord of Lords, with such contrition and devotion, such purity and faith, such purpose and intention, as to attain the welfare and salvation of my soul.
Grant me, I beseech you, to receive not only the Sacrament of the Body and Blood of my Lord, but also the very Reality and Strength of the Sacrament.
O most gracious God, grant me so to receive the Body of your only begotten Son, our Lord Jesus Christ that very body which he took of the Virgin Mary, that I may be truly incorporated into his mystical body, and so numbered among its members.
O most loving Father, grant me at last to behold unveiled and forevermore your beloved Son, whom, in my pilgrimage, I receive now beneath the veil of this blessed Sacrament.
Who lives and reigns with you in the unity of the Holy Spirit, God, forever and ever. Amen.