No one bound by carnal desires and pleasures is worthy to approach, draw near, or minister to You, the King of Glory. For to serve You is great and awesome even for the heavenly powers. Yet, because of Your ineffable and immeasurable love for mankind, You impassibly and immutably became man. You, as the Master of all, became our high priest and delivered unto us the sacred service of this liturgical sacrifice without the shedding of blood. Indeed, Lord our God, You alone reign over the celestial and the terrestrial; borne aloft on the cherubic throne, Lord of the Seraphim and King of Israel, the only holy and resting among the holy ones. I now beseech You, Who alone are good and inclined to hear: Look down upon me, Your sinful and unprofitable servant, and cleanse my soul and heart of a wicked conscience; and enable me, by the power of Your Holy Spirit, clothed with the grace of the priesthood, to stand before Your holy Table and celebrate the Mystery of Your holy and pure Body and Your precious Blood. I come before You with my head bowed, and I implore You: Turn not Your face away from me, nor reject me from among Your children, but make me, Your sinful and unworthy servant, worthy to offer these gifts to You. For You are the One Who both offers and is offered, the One Who is received and is distributed, O Christ our God, and to You we offer up glory, with Your Father, Who is without beginning, and Your all-holy and good and life-creating Spirit, now and forever and to the ages of ages. Amen.
-St. John Chrysostom