Agnus Dei (liturgy) Agnus Dei (liturgy) In the Mass of the Roman Rite and also in the Eucharist of the Anglican Communion, the Lutheran Church, and the Western Rite of the Orthodox Church the Agnus Dei is the invocation to the Lamb of God sung or recited during the fraction of the Host. The Syrian custom of a chant addressed to the Lamb of God was introduced into the Roman Rite Mass by Pope Sergius I (687–701) in the context of his rejection of the Council of Trullo (692), which was well received in the Byzantine East and called the Quinisext Council, but
Crucifix of Ferdinand and Sancha cross. At the base of the cross, below the crucified figure, is a figure of Adam, and below that the inscription: FREDINANDUSREX<br>SANCIAREGINA indicating the commissioners of the work, King Ferdinand and Queen Sancha. The reverse of the cross bears plant figures, in the centre the Agnus Dei, and at the four extremities of the arms the symbols of the Four Evangelists. Crucifix of Ferdinand and Sancha The crucifix of Ferdinand and Sancha () is an ivory carving from "circa" 1063, today in the National Archaeological Museum of Spain. It was part of an offering by King Ferdinand I of León