This book should certainly serve as a message of knowledge. But to an even greater extent, we would like to awaken and strengthen our love for worship, for the service ("liturgy") of God to many people and for the service ("liturgy") of many people for the sake of God's glorious glory, so that in our worldly environment the presence of the heavenly liturgy can be experienced. It is necessary to enter into it so that people and through them the whole world participate in the glory of God the Creator and the Savior and, accordingly, find the way to their highest dignity and beauty. Therefore, let a prayer be sent to this book from the liturgy of St. Basil the Great, which reveals A??????????? (Pontifikale, Official of the Bishop's Priesthood) of the Greek Church; we refer her to all Christians who - without distinction as to whether they are ordained or not - are called to the solemn service of the liturgy.