Down at home for the week. Another snippet from YOUCAT.
Who celebrates the liturgy?
In all earthly liturgies, Christ the Lord himself is the one who celebrates the cosmic liturgy, which encompasses angels and men, the living and the dead, the past, present, and future, heaven and earth. Priests and believers participate in different ways in Christ’s divine worship.
When we celebrate the liturgy, we must prepare ourselves interiorly for the great thing that takes place in it: here and now Christ is present and, with him, all of heaven. There everyone is filled with unspeakable joy and at the same time with loving care for us. The last book of Sacred Scripture, Revelation, portrays in mysterious images this liturgy to which we here on earth join our voices. (YOUCAT question 179)