<P> The Agnus Dei is part of nearly all settings by composers of sung masses . </P> <P> The priest again uses the phrase "Lamb of God", in a more complete quotation from John 1: 29, when displaying the consecrated Host (or the Host and Chalice) to the people before giving them Holy Communion . He says: "Ecce Agnus Dei, ecce qui tollit peccata mundi . Beati qui ad cenam Agni vocati sunt" (Behold the Lamb of God, behold him who takes away the sins of the world . Blessed are those called to the supper of the Lamb). </P>

O lamb of god you take away the sins of the world