Lamb of God sheep representing the apostles flanking the central Agnus Dei, as in Santi Cosma e Damiano, Rome (526–30). The Moravian Church uses an Agnus Dei as their seal with the surrounding inscription "Vicit agnus noster, eum sequamur" ("Our Lamb has conquered, let us follow him"). Although the depiction of Jesus as the Lamb of God is of ancient origin, it is not used in the liturgical iconography of the Eastern Orthodox Church. The reason for this is that the depictions of Jesus in the Orthodox Church are anthropomorphic rather than symbolic, as a confession of the Orthodox belief in the Incarnation
Agnus Dei (liturgy) the Roman Missal, § 83, states: "The supplication "Agnus Dei", is, as a rule, sung by the choir or cantor with the congregation responding; or it is, at least, recited aloud. This invocation accompanies the fraction and, for this reason, may be repeated as many times as necessary until the rite has reached its conclusion, the last time ending with the words "dona nobis pacem" ('grant us peace')." In Tridentine Requiem Masses, the first two invocations ended with "dona eis requiem" (give them rest) instead of "miserere nobis", and the last with "dona eis requiem sempiternam" (give them rest eternal).