The exposition of the Liturgy of St. James, which is basically the Celebration of the Holy Eucahrist, is most significant for the understanding of the mystery of the God in offering His only Son a vicarious sacrifice for the redemption of man. The purpose of the liturgy is to show the believer the right path and leads him by faith to salvation and eternal life through the Body and Blood of Jesus Christ represented in the form of Bread and Wine. To make it understandable, Rev. Saka explains not only the meaning of terms connected with the liturgy but of all the components of the vessels, the vesting, the censoring, the candles and the propitiatory prayers associated with them. This exposition should benefit both church and liturgical scholars and lay people interested in the profound spiritual meaning of their faith.