In this thesis, we will write about the preparation of the gifts, which is the initial part of the liturgy of the Eucharist. We have approached this topic through a few different aspects: the biblical aspect, the historical aspect, the practical-liturgical aspect, and finally the aspect of contemporary rites that are still under a great influence of the Second Vatican Council. The biblical aspect will briefly cover the mentality of the Old Testament times, people’s understanding of the sacrifice and the prophetic warnings of misunderstanding and misinterpreting, while in the New Testament we learn about the source of the rite through the reports from the Last Supper, as well as the realization of the spiritual sacrifice which the Old Testament prophets talked about, all of it according to Jesus Christ. The historical aspect will cover the development of the rite through the period of the first Church, then over the period of the next 15 centuries, it will cover the innovations brought about by the Council of Trident and the Missal of pope Pius V., as well as show how the Second Vatican Council simplified the former rite through the Missal of Paul VI, which emphasizes the spiritual approach. The practical-liturgical aspect will cover the details of the rite, as well as explanations of its part, it will cover all of the necessary material for the rite, and finally the form of the rite, or more precisely the prayer of the ceremony. Finally, we will write about doctrine of the Second Vatican Council which puts a great emphasis on participation in the rite by co-sacrifice with Christ, or more precisely, surrender of your life to God’s will as a sign of real worship, as written about by the prophets of the Old Testament.